Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
181 results · page 1 of 4
Oct 13, 2026A security issue was discovered in MongoDB mongos (the sharded cluster router) where an authenticated user with readWrite privileges could crash the mongos procCVE-2026-96299 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
A security issue was discovered in MongoDB mongos (the sharded cluster router) where an authenticated user with readWrite privileges could crash the mongos process by crafting a specially formed aggregation pipeline. The issue leverages an internal aggregation stage that lacks proper authorization checks despite being intended for internal use, allowing a subsequent stage to be forced to execute on the router under conditions it was not designed to handle. This results in an unhandled fatal error that causes the mongos process to immediately abort, resulting in denial of service for all clients routed through the affected mongos instance.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use of freed memory in the aggregation feature of MongoDB Server can cause the server to read data from a memory area after it has been released.CVE-2026-96297 · Other software · MongoDB · reported by cna@mongodb.comMedium 6
Use of freed memory in the aggregation feature of MongoDB Server can cause the server to read data from a memory area after it has been released. When an internal aggregation stage is combined with a batch size of 0, the server may read from memory that is no longer in use. Because that memory can be reused for other data before it is read, query results returned to the client may contain unrelated data from the server process. Depending on the state of memory at the time, the server process may also terminate unexpectedly. The behavior can occur when an authenticated user with read privileges runs an aggregate command that combines these two settings.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026A security issue was discovered in MongoDB mongos (the sharded cluster router) where an authenticated user with readWrite privileges could crash the mongos procCVE-2026-104005 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
A security issue was discovered in MongoDB mongos (the sharded cluster router) where an authenticated user with readWrite privileges could crash the mongos process by crafting a specially formed aggregation pipeline. The issue leverages an internal aggregation stage that lacks proper authorization checks despite being intended for internal use, allowing a subsequent stage to be forced to execute on the router under conditions it was not designed to handle. This results in an unhandled fatal error that causes the mongos process to immediately abort, resulting in denial of service for all clients routed through the affected mongos instance.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026MongoDB Server's collection validation feature may not properly handle certain expressions stored in a validator.CVE-2026-104004 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
MongoDB Server's collection validation feature may not properly handle certain expressions stored in a validator. In some cases, this can cause the server process to stop running when a document is later inserted. The behavior can occur for authenticated users with write access.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026An issue in MongoDB Server's aggregation framework can cause certain constant values to be handled incorrectly during internal query rewriting.CVE-2026-103965 · Other software · MongoDB · reported by cna@mongodb.comMedium 5.3
An issue in MongoDB Server's aggregation framework can cause certain constant values to be handled incorrectly during internal query rewriting. Under certain conditions, an authenticated user with read access may receive field values in aggregation output that the query did not intend to return.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 11, 2026A race condition in the document value layer of MongoDB Server can allow concurrent server threads to operate on the same internal memory without synchronizatioCVE-2026-89099 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.7
A race condition in the document value layer of MongoDB Server can allow concurrent server threads to operate on the same internal memory without synchronization, leading to memory corruption. An authenticated user holding ordinary read-write privileges on a database may be able to trigger this condition over the normal client protocol, resulting in server termination and potential corruption of process memory with user-influenced content. Successful use of this issue may impact the confidentiality, integrity, and availability of the affected server process.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026An integer overflow in the query planning component of MongoDB Server can allow an authenticated user with ordinary database-level read/write privileges to bypaCVE-2026-82076 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
An integer overflow in the query planning component of MongoDB Server can allow an authenticated user with ordinary database-level read/write privileges to bypass an internal resource limit. Submitting a specially crafted query causes the server to consume memory without bound during query planning, and the resulting exhaustion terminates the server process. This may result in a denial of service affecting all databases served by the affected node.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026An uncontrolled resource consumption weakness exists in the request-handling path of the MongoDB sharded-cluster router process.CVE-2026-82075 · Other software · MongoDB · reported by cna@mongodb.comHigh 8.7
An uncontrolled resource consumption weakness exists in the request-handling path of the MongoDB sharded-cluster router process. A client that has network access to a router port and has not authenticated can supply connection-monitoring parameters that cause the server to expend CPU resources without any rate limiting, degrading or denying service to legitimate clients. No authentication, elevated privileges, or user interaction is required. Only availability is affected; data confidentiality and integrity are not impacted.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026MongoDB Server contains an incorrect authorization vulnerability in the aggregation framework.CVE-2026-82074 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
MongoDB Server contains an incorrect authorization vulnerability in the aggregation framework. An authenticated user with minimal privileges can craft a specially formatted aggregation request that causes the server's authorization subsystem to evaluate a different operation than what is actually executed, resulting in unauthorized read access to collection data within the target database.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue in the MongoDB Server aggregation framework allows an authenticated user with limited read privileges to bypass view-level authorization checksCVE-2026-82073 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
A security issue in the MongoDB Server aggregation framework allows an authenticated user with limited read privileges to bypass view-level authorization checks and access data from unauthorized collections when Atlas Search features are in use. The issue stems from insufficient validation of an internal command parameter that can be set by external clients, causing a security check to be improperly skipped.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026Insufficient validation of storage engine configuration options in MongoDB Server allows an authenticated user with write privileges to supply crafted parameterCVE-2026-82071 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.2
Insufficient validation of storage engine configuration options in MongoDB Server allows an authenticated user with write privileges to supply crafted parameters during collection creation that override internal storage metadata. This results in an out-of-bounds memory write in the server process, causing a denial of service via server crash, with potential for further impact including arbitrary code execution.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue in MongoDB Server's diagnostic reporting interface allows an authenticated user with monitoring privileges to access insufficiently protected cCVE-2026-82070 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
A security issue in MongoDB Server's diagnostic reporting interface allows an authenticated user with monitoring privileges to access insufficiently protected credentials from concurrent administrative operations. The same credentials are properly redacted in server log output, but the diagnostic interface omits equivalent redaction. Successful exploitation requires a valid authenticated session with monitoring-level permissions and results in exposure of cleartext credentials that could enable impersonation of other users, including privileged accounts.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue in MongoDB Server's query statistics serialization on the router allows users with monitoring privileges to access unredacted search query textCVE-2026-82069 · Other software · MongoDB · reported by cna@mongodb.comMedium 5.1
A security issue in MongoDB Server's query statistics serialization on the router allows users with monitoring privileges to access unredacted search query text from other users' operations. An improper conditional check in the serialization logic causes the data redaction mechanism to be bypassed when processing search queries through the sharded cluster router. This results in sensitive query literals being stored and made accessible through the query statistics interface.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue in MongoDB Server allows an authenticated user with write privileges to trigger a persistent fatal assertion crash by sending specially craftedCVE-2026-82068 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
A security issue in MongoDB Server allows an authenticated user with write privileges to trigger a persistent fatal assertion crash by sending specially crafted retryable write commands. The crash state is durably persisted, causing the server process to repeatedly crash on restart and potentially propagating to additional nodes in a sharded cluster. Manual intervention is required to restore service availability.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026Improper handling of case sensitivity in the configuration validation component of MongoDB Server may cause the authorization subsystem to remain in a default dCVE-2026-82067 · Other software · MongoDB · reported by cna@mongodb.comCritical 9.2
Improper handling of case sensitivity in the configuration validation component of MongoDB Server may cause the authorization subsystem to remain in a default disabled state during server startup. An unauthenticated user with network access to a deployment where this condition occurs can perform arbitrary administrative operations, resulting in full impact of data confidentiality, integrity, and availability.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A heap out-of-bounds read security issue exists in the query planning component of MongoDB Server.CVE-2026-82066 · Other software · MongoDB · reported by cna@mongodb.comMedium 5.3
A heap out-of-bounds read security issue exists in the query planning component of MongoDB Server. An authenticated user with database read and write privileges can trigger the security issue through crafted query operations, causing the server to read memory beyond allocated buffer boundaries. The revealed memory contents may be partially observable through diagnostic query statistics output.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue in the MongoDB Server's storage engine integration layer allows an authenticated user with collection creation privileges to cause a persistentCVE-2026-82065 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
A security issue in the MongoDB Server's storage engine integration layer allows an authenticated user with collection creation privileges to cause a persistent denial of service. Insufficient validation of user-supplied storage configuration options permits values that, once persisted to durable metadata, trigger a fatal assertion failure when the metadata is subsequently read by diagnostic operations. The corrupted metadata persists across server restarts and is replicated to other cluster members, requiring manual operator intervention to restore service.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue in MongoDB Server allows an unauthenticated network user to cause a denial of service on a specific type of replica set member.CVE-2026-82064 · Other software · MongoDB · reported by cna@mongodb.comHigh 8.7
A security issue in MongoDB Server allows an unauthenticated network user to cause a denial of service on a specific type of replica set member. The server contains an assertion in its read concern processing logic that can be reached without authentication, and the assertion's assumptions about internal state do not hold for all member configurations, causing the server process to terminate.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A use-after-free security issue in the cursor management component of MongoDB Server allows an authenticated user to cause a denial of service.CVE-2026-82063 · Other software · MongoDB · reported by cna@mongodb.comMedium 6
A use-after-free security issue in the cursor management component of MongoDB Server allows an authenticated user to cause a denial of service. Under specific timing conditions during cursor operations, a stale pointer to a freed resource may be retained and subsequently dereferenced during cursor cleanup, leading to a server process crash.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue in MongoDB Server allows an authenticated user with elevated internal privileges to bypass a disabled feature gate in the applyOps command by sCVE-2026-82062 · Other software · MongoDB · reported by cna@mongodb.comHigh 7
A security issue in MongoDB Server allows an authenticated user with elevated internal privileges to bypass a disabled feature gate in the applyOps command by specifying an internal replication mode value that was not intended to be client-selectable. This bypass enables execution of container operations that are disabled by default in production configurations, allowing direct storage-engine writes to arbitrary internal storage tables. The authorization check for these operations validates only the operation's namespace, not the actual storage target, enabling writes to unrelated internal metadata or other collections' data.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A use-after-free security issue exists in the server's query execution memory tracking subsystem.CVE-2026-82061 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.2
A use-after-free security issue exists in the server's query execution memory tracking subsystem. An authenticated user with read privileges can trigger a write to freed heap memory through a sequence of standard database commands, leading to server process crash or potential memory corruption. No user interaction is required.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026In MongoDB, insufficient validation of shard key values during document insertion allowed authenticated users to store documents with specially crafted, operatoCVE-2026-82060 · Other software · MongoDB · reported by cna@mongodb.comLow 2.3
In MongoDB, insufficient validation of shard key values during document insertion allowed authenticated users to store documents with specially crafted, operator-shaped objects as shard key values in sharded collections. When change stream events for such documents were processed with the updateLookup full document mode, the crafted values were embedded into internal post-image lookup queries without proper sanitization, causing them to be interpreted as query operators rather than literal equality values. This could result in change stream consumers receiving incorrect post-image documents or encountering non-resumable fatal errors.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026An internal aggregation expression in MongoDB Server was incorrectly registered as accessible to any authenticated user rather than being restricted to internalCVE-2026-82059 · Other software · MongoDB · reported by cna@mongodb.comMedium 6
An internal aggregation expression in MongoDB Server was incorrectly registered as accessible to any authenticated user rather than being restricted to internal cluster operations. By crafting a malformed index specification within this expression, an authenticated user with read-only privileges could trigger an assertion failure in the index key generation code path. In certain build configurations, this assertion failure results in termination of the mongod process, causing a denial of service to all connected clients.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A flaw in MongoDB's JSON Schema validation error generation code allows an authenticated user with readWrite privileges to crash the mongod server.CVE-2026-82058 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
A flaw in MongoDB's JSON Schema validation error generation code allows an authenticated user with readWrite privileges to crash the mongod server. When a BSON document containing an array with a malformed numeric field name fails a $jsonSchema items type constraint, the error generation path performs unsafe numeric conversion on the user-controlled field name without proper exception handling, resulting in an uncaught exception that terminates the server process. This is possible because incoming wire protocol BSON validation does not enforce that array element field names are valid, in-range numeric indices.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue was discovered in MongoDB where an authenticated user with readWrite privileges could crash the mongod server process.CVE-2026-82057 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
A security issue was discovered in MongoDB where an authenticated user with readWrite privileges could crash the mongod server process. By specifying a custom WiredTiger storage configuration option with an incompatible value during collection creation, a user could cause a type confusion in the storage engine layer. When documents were subsequently read from the misconfigured collection, the resulting mismatch in expected data format led to corrupted memory interpretation and a server crash. The crafted collection configuration persists across restarts, requiring manual operator intervention to remediate.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A race condition in MongoDB server's text index query parsing can cause a heap use-after-free read when handling upsert retry paths.CVE-2026-82056 · Other software · MongoDB · reported by cna@mongodb.comMedium 6
A race condition in MongoDB server's text index query parsing can cause a heap use-after-free read when handling upsert retry paths. Under certain concurrent index lifecycle operations, a raw pointer to internal text index metadata may be dereferenced after the underlying structures have been freed, leading to a server crash. An authenticated user with readWrite privileges can trigger this condition through specific concurrent text-search and index management operations, resulting in denial of service for all connected clients. This
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue exists in MongoDB's 2dsphere index key generation that can cause a server crash due to a null pointer dereference.CVE-2026-82055 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
A security issue exists in MongoDB's 2dsphere index key generation that can cause a server crash due to a null pointer dereference. When a specially crafted GeoJSON document is inserted into a collection with a 2dsphere index, an inconsistency in geometry parsing can leave an internal object in an invalid, partially initialized state. During subsequent index key generation, access to this improperly initialized object results in a null pointer dereference that terminates the mongod process. An authenticated user with write access can use this to cause a denial of service.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue exists in MongoDB server's JSON Pointer parser used during $jsonSchema query filter processing.CVE-2026-82054 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
A security issue exists in MongoDB server's JSON Pointer parser used during $jsonSchema query filter processing. When a find command includes a specially crafted $jsonSchema filter field, the parser processes the input without enforcing adequate limits on iteration count or total allocation size, resulting in significant memory amplification. Under concurrent request load, the cumulative memory consumption can exhaust available heap memory, causing the server's out-of-memory handler to terminate the mongod process and deny service to all connected clients.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026A security issue exists in MongoDB's LDAP authorization integration where pooled LDAP connections can retain stale authentication identities after user authentiCVE-2026-82053 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.6
A security issue exists in MongoDB's LDAP authorization integration where pooled LDAP connections can retain stale authentication identities after user authentication under certain configurations. Subsequent authorization queries may execute under an unintended LDAP identity rather than the expected one. This can result in incorrect role assignments based on the LDAP directory's access control configuration, potentially allowing an authenticated user to acquire elevated privileges that were not intended by the deployment's authorization policy.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 8, 2026The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod).CVE-2026-82052 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod). Under certain specific conditions the regex match can start in the middle of a multi-code-unit character, triggering an assertion during query execution.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's Queryable Encryption maintenance operations could allow an authenticated user with privileges on one encrypted collection to cause CVE-2026-18712 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.2
An issue in MongoDB Server's Queryable Encryption maintenance operations could allow an authenticated user with privileges on one encrypted collection to cause unauthorized modification or destruction of data belonging to a different collection. This is due to insufficient validation of certain internal metadata references before they are used to perform operations on other namespaces.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's query execution engine could allow an authenticated user with read and write privileges to cause an internal reference to be used aCVE-2026-18711 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
An issue in MongoDB Server's query execution engine could allow an authenticated user with read and write privileges to cause an internal reference to be used after the underlying memory has been freed, when running certain queries against time-series collections. This could result in a server crash or disclosure of freed memory contents within query results.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server could allow an authenticated user with direct network access to a shard to improperly commit or abort an in-progress prepared transacCVE-2026-18709 · Other software · MongoDB · reported by cna@mongodb.comMedium 5.9
An issue in MongoDB Server could allow an authenticated user with direct network access to a shard to improperly commit or abort an in-progress prepared transaction, bypassing the intended transaction coordination process. This could result in cross-shard data inconsistency, cluster clock corruption, and violation of transaction atomicity guarantees.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's JavaScript scripting engine could allow an authenticated user with write privileges to cause code they control to be executed withiCVE-2026-18708 · Other software · MongoDB · reported by cna@mongodb.comMedium 5.3
An issue in MongoDB Server's JavaScript scripting engine could allow an authenticated user with write privileges to cause code they control to be executed within the query scope of other users, through a specially crafted stored value processed during an internal maintenance cycle. This could result in corruption of query results affecting other users and denial of service targeted at their operations on the same database. Impact is limited to the scripting engine's execution sandbox, which does not provide access to database, filesystem, or network resources.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server could allow an authenticated user, including one with no assigned privileges, to cause the server process to terminate unexpectedly bCVE-2026-18707 · Other software · MongoDB · reported by cna@mongodb.comMedium 5.3
An issue in MongoDB Server could allow an authenticated user, including one with no assigned privileges, to cause the server process to terminate unexpectedly by submitting a specially formed aggregation command. This could result in a denial of service.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's $graphLookup aggregation stage could allow an authenticated user able to issue aggregation and memory-management commands to cause CVE-2026-18706 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.5
An issue in MongoDB Server's $graphLookup aggregation stage could allow an authenticated user able to issue aggregation and memory-management commands to cause an internal reference to be used after the underlying memory has been freed. This could result in a server crash or, potentially, execution of unintended code.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's Atlas Vector Search feature could allow an authenticated user with read access to one view to retrieve documents from a different, CVE-2026-18705 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
An issue in MongoDB Server's Atlas Vector Search feature could allow an authenticated user with read access to one view to retrieve documents from a different, protected view over the same underlying collection. This is due to insufficient handling of certain user-supplied fields when constructing an internal request forwarded to the search process.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's aggregation framework could allow an authenticated user with only read privileges to perform write operations against collections tCVE-2026-18704 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
An issue in MongoDB Server's aggregation framework could allow an authenticated user with only read privileges to perform write operations against collections they should not be able to modify. This is due to an internal-use aggregation stage being reachable by external clients without an appropriate authorization check on its embedded operations.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authenCVE-2026-18703 · Other software · MongoDB · reported by cna@mongodb.comLow 2.3
An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authentication method, even when an administrator has configured the server to restrict authentication to other mechanisms. This could allow authentication through a method the administrator intended to disable.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server could allow an authenticated user with limited, database-scoped privileges to modify diagnostic logging settings that affect the entiCVE-2026-18702 · Other software · MongoDB · reported by cna@mongodb.comMedium 5.3
An issue in MongoDB Server could allow an authenticated user with limited, database-scoped privileges to modify diagnostic logging settings that affect the entire server rather than just the intended database. This could allow suppression of diagnostic logging server-wide, potentially obscuring unauthorized activity, or degrade operational monitoring by causing excessive log volume.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's query subsystem could allow an authenticated user with read privileges to cause the server process to terminate unexpectedly by subCVE-2026-18701 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
An issue in MongoDB Server's query subsystem could allow an authenticated user with read privileges to cause the server process to terminate unexpectedly by submitting a specially formed query filter. This could result in a denial of service.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's geospatial validation could allow an authenticated user with write privileges to cause an internal reference to be used after the uCVE-2026-18700 · Other software · MongoDB · reported by cna@mongodb.comMedium 6
An issue in MongoDB Server's geospatial validation could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed, through concurrent operations against a collection using a certain type of validator. This could result in a server crash, leading to a denial of service.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's query planner could allow an authenticated user with read-level privileges to cause the server process to terminate unexpectedly byCVE-2026-18699 · Other software · MongoDB · reported by cna@mongodb.comMedium 6
An issue in MongoDB Server's query planner could allow an authenticated user with read-level privileges to cause the server process to terminate unexpectedly by submitting a specially formed query against a collection with a text index. This could result in a denial of service, affecting connected clients and in-flight operations.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that CVE-2026-18698 · Other software · MongoDB · reported by cna@mongodb.comMedium 5.3
An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that should require more specific privileges. This could result in exposure of collection metadata and, on certain deployment configurations, unauthorized modification of system collection data.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's aggregation framework could allow an unauthenticated party to cause a mongos (router) process to terminate unexpectedly by submittiCVE-2026-18697 · Other software · MongoDB · reported by cna@mongodb.comHigh 8.7
An issue in MongoDB Server's aggregation framework could allow an unauthenticated party to cause a mongos (router) process to terminate unexpectedly by submitting a specially formed aggregation command. This could result in a denial of service, disrupting client connections routed through the affected mongos instance.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's applyOps command could allow an authenticated user with specific non-default privileges to perform certain data-definition operatioCVE-2026-18696 · Other software · MongoDB · reported by cna@mongodb.comHigh 7
An issue in MongoDB Server's applyOps command could allow an authenticated user with specific non-default privileges to perform certain data-definition operations, such as dropping or modifying collections, against collections they do not have permission to manipulate. This is due to an inconsistency in how the target collection is determined between the authorization check and the actual operation.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's handling of certain query predicates against time-series collections with a metaField could allow an authenticated user with write CVE-2026-18695 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
An issue in MongoDB Server's handling of certain query predicates against time-series collections with a metaField could allow an authenticated user with write access to cause the server process to terminate unexpectedly, resulting in a denial of service.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's geospatial query processing could allow an authenticated user with write privileges to cause certain malformed geometry data to be CVE-2026-18694 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.1
An issue in MongoDB Server's geospatial query processing could allow an authenticated user with write privileges to cause certain malformed geometry data to be stored and later processed without proper validation. Subsequent queries against this data could then result in the server accessing memory outside its intended bounds. This could result in a server crash (denial of service) and may expose a limited amount of server process memory.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's handling of timeseries collections could allow an authenticated user with write privileges to cause an internal data structure to bCVE-2026-18693 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.2
An issue in MongoDB Server's handling of timeseries collections could allow an authenticated user with write privileges to cause an internal data structure to become inconsistent through certain document insertions. A subsequent insert into the affected bucket could then result in the server accessing memory outside its intended bounds, potentially causing a server crash (denial of service), exposure of limited memory contents, or memory corruption.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 11, 2026An issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write privileges to cause an internal reference to bCVE-2026-18692 · Other software · MongoDB · reported by cna@mongodb.comHigh 7.7
An issue in MongoDB Server's handling of timeseries bucket lifecycle could allow an authenticated user with write privileges to cause an internal reference to be used after the underlying memory has been freed. Subsequent operations could then result in a server crash or, potentially, execution of unintended code.
- Product
- MongoDB Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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