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.
9 results
Sep 23, 2026Moquette is a lightweight Java MQTT broker.CVE-2026-95848 · Other software · moquette-io · reported by GitHubCritical 9.3
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, when a configured authenticator or authorizator class cannot be loaded, Server.initializeAuthenticator and Server.initializeAuthorizatorPolicy treat the failure as though no custom class was configured and fall back to AcceptAllAuthenticator or PermitAllAuthorizatorPolicy. A misspelled class name, missing dependency, constructor failure, or classpath problem can therefore start the broker with authentication or authorization disabled even though the operator configured those controls. This issue is fixed in version 0.18.1.
- Product
- moquette
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Moquette is a lightweight Java MQTT broker.CVE-2026-95847 · Other software · moquette-io · reported by GitHubHigh 8.8
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, H2PersistentQueue derives a session's message-map name as queue_ plus the client ID and its metadata-map name as queue_ plus the client ID plus _meta. A durable session whose client ID ends in _meta can therefore make its message map collide with another client's metadata map. The colliding sessions read and write the same H2 MVStore map with incompatible value types, which can corrupt queue head and tail data and cause message loss, misdelivery, failed queue reloads, or exposure of queued content across sessions. This issue is fixed in version 0.18.1.
- Product
- moquette
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Moquette is a lightweight Java MQTT broker.CVE-2026-95846 · Other software · moquette-io · reported by GitHubHigh 8.7
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.publishWill publishes a client's Last-Will message without applying the canWrite authorization and reserved-topic checks used for a normal PUBLISH. A client can configure a Will for a topic that the client is not permitted to write and cause the broker to publish the unauthorized message when the client disconnects unexpectedly. This issue allows unauthorized message injection into restricted topics. This issue is fixed in version 0.18.1.
- Product
- moquette
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Moquette is a lightweight Java MQTT broker.CVE-2026-95845 · Other software · moquette-io · reported by GitHubHigh 8.7
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, the broker does not enforce a maximum length for pending per-session message queues. When a fast publisher sends messages to a slow subscriber whose in-flight window is full, queued messages can accumulate without bound in memory or persistent storage. Remote clients can use this condition to exhaust broker resources and cause a denial of service. This issue is fixed in version 0.18.1.
- Product
- moquette
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Moquette is a lightweight Java MQTT broker.CVE-2026-95844 · Other software · moquette-io · reported by GitHubHigh 8.7
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, Moquette does not limit the depth of topic names and topic filters before processing them through recursive CTrie insertion and matching operations. A remote client can publish or subscribe with a deeply nested topic, causing a StackOverflowError that disrupts session processing and can deny service to broker clients. This issue is fixed in version 0.18.1.
- Product
- moquette
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Moquette is a lightweight Java MQTT broker.CVE-2026-95843 · Other software · moquette-io · reported by GitHubHigh 8.7
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.subscribe parses a shared-subscription filter through SharedSubscriptionUtils.extractShareName before validating the complete $share/{shareName}/{topicFilter} structure. A remote client can send a filter such as $share/grp without a topic-filter portion, causing a StringIndexOutOfBoundsException while calculating the share name. The exception terminates command handling on the shared session event loop and can deny service to other client sessions assigned to that loop. This issue is fixed in version 0.18.1.
- Product
- moquette
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Moquette is a lightweight Java MQTT broker.CVE-2026-95842 · Other software · moquette-io · reported by GitHubHigh 8.7
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, SessionEventLoop.run catches only InterruptedException, and SessionEventLoopGroup does not restart a terminated loop. An MQTT command that raises an uncaught exception can terminate an event loop shared by multiple client sessions, preventing every co-located client from processing PUBLISH, SUBSCRIBE, PUBACK, and other commands. An attacker can select client IDs that map across the available loops to disrupt session processing for the entire broker. This issue is fixed in version 0.18.1.
- Product
- moquette
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Moquette is a lightweight Java MQTT broker.CVE-2026-85724 · Other software · moquette-io · reported by GitHubCritical 9.6
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, when pattern-based ACL rules are configured, AuthorizationsCollector.canDoOperation substitutes client ID and username values directly into rules containing %c or %u and then treats the result as an MQTT topic filter. A client that uses + or # in either identity can broaden the substituted filter and gain cross-tenant read and write access. A # identity can also produce an invalid filter that triggers a NullPointerException in Topic.match and disrupts session processing. This issue is fixed in version 0.18.1.
- Product
- moquette
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 18, 2026Moquette is a lightweight Java MQTT broker.CVE-2026-85058 · Other software · moquette-io · reported by GitHubHigh 7.5
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.publishWill publishes a client-controlled Last Will message through publish2Subscribers without invoking the authorizator.canWrite check used by normal PUBLISH paths. When anonymous access is enabled and topic ACLs restrict writes, a remote client can set an ACL-protected topic as the Last Will Topic during CONNECT and perform an abnormal client disconnect, causing the broker to inject attacker-controlled messages into a topic for which the client lacks write permission. This issue is fixed in version 0.18.1.
- Product
- moquette
- 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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