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.
16 results
Oct 14, 2026Improper authentication in PgBouncer 1.17.0 through 1.26.0 allows a remote attacker who knows the password of a user listed in auth_file to log in as any other CVE-2026-107350 · Other software · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007High 8.8
Improper authentication in PgBouncer 1.17.0 through 1.26.0 allows a remote attacker who knows the password of a user listed in auth_file to log in as any other user that authenticates using SCRAM, including PgBouncer admin users and backend superusers. A second StartupMessage sent during SCRAM authentication against a non-existent database is not rejected and switches the user being logged in as, while the SCRAM exchange is still verified against the keys of the first user.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 14, 2026An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service.CVE-2026-107349 · Other software · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007High 7.5
An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service. A StartupMessage whose options parameter contains an empty parameter name, such as "-c=", makes the ignore_startup_parameters list lookup loop forever. Because PgBouncer serves all clients from a single process, this saturates a CPU core and makes PgBouncer unresponsive to all clients until the process is restarted.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 14, 2026Integer overflow in the message buffer growth logic (mbuf_make_room) in PgBouncer 1.21.0 through 1.26.0 allows a remote attacker to cause a denial of service whCVE-2026-107348 · Other software · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007Medium 5.9
Integer overflow in the message buffer growth logic (mbuf_make_room) in PgBouncer 1.21.0 through 1.26.0 allows a remote attacker to cause a denial of service when max_packet_size is configured above 2147483648. A packet header declaring a length above 2^31 makes the buffer size computation overflow, leaving the growth loop unable to terminate. Because PgBouncer serves all clients from a single process, this saturates a CPU core and stalls every pooled connection until the process is restarted. Since 1.23.0 the overflow is reachable before authentication with a five-byte packet header.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Missing upper bound on the key derivation iteration count accepted during SCRAM authentication to a backend server in PgBouncer through 1.25.2 allows a maliciouCVE-2026-6669 · Other software · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007Medium 5.9
Missing upper bound on the key derivation iteration count accepted during SCRAM authentication to a backend server in PgBouncer through 1.25.2 allows a malicious or compromised PostgreSQL backend to cause uncontrolled CPU consumption in PgBouncer. The resulting key derivation cannot be interrupted in frontend builds such as PgBouncer. Because PgBouncer serves all clients from a single process, one backend can in this way stop it from serving traffic for every other database and client it is pooling, so the failure of a single backend is not contained.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Integer overflow in the packet buffer growth logic in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to cause a denial of service.CVE-2026-6668 · Other software · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007High 7.5
Integer overflow in the packet buffer growth logic in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to cause a denial of service. Sufficiently large input makes the buffer size computation overflow, leaving the growth loop unable to terminate. Because PgBouncer serves all clients from a single process, this saturates a CPU core and stalls every pooled connection until the process is killed. Both unauthenticated and authenticated code paths can reach the overflow.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Sep 23, 2026Missing validation of a mandatory attribute in the SCRAM client-final-message parser in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to crCVE-2026-19888 · Other software · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007High 7.5
Missing validation of a mandatory attribute in the SCRAM client-final-message parser in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to crash the process. A malformed message can make the parser report success while leaving a required value unset, which is then dereferenced as a NULL pointer. The crash occurs before any credential is verified, so no valid account is required. Because PgBouncer serves all clients from a single process, this terminates every pooled connection.
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 8, 2026PgBouncer before 1.25.2 did not perform an appropriate authorization check for the KILL_CLIENT admin command.CVE-2026-6667 · Other software · Pgbouncer · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007Medium 4.3
PgBouncer before 1.25.2 did not perform an appropriate authorization check for the KILL_CLIENT admin command. All users with access to the administration console (which itself requires authorization) could run this command. It would have been correct to allow only users listed in the admin_users parameter.
- Product
- Pgbouncer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 8, 2026A possible null pointer reference in PgBouncer before 1.25.2 could lead to a crash, if a server sends an error response without SQLSTATE field.CVE-2026-6666 · Other software · Pgbouncer · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007Medium 5.9
A possible null pointer reference in PgBouncer before 1.25.2 could lead to a crash, if a server sends an error response without SQLSTATE field.
- Product
- Pgbouncer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 8, 2026The SCRAM code in PgBouncer before 1.25.2 did not check the return value of strlcat() correctly when building the contents of the SCRAM client-final-message.CVE-2026-6665 · Other software · Pgbouncer · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007High 8.1
The SCRAM code in PgBouncer before 1.25.2 did not check the return value of strlcat() correctly when building the contents of the SCRAM client-final-message. A malicious backend that sends a SCRAM server-final-message with a long nonce can trigger a stack overflow.
- Product
- Pgbouncer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 8, 2026An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead to a crash.CVE-2026-6664 · Other software · Pgbouncer · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007High 7.5
An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead to a crash. An unauthenticated remote attacker can crash PgBouncer with a malformed SCRAM authentication packet.
- Product
- Pgbouncer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 3, 2025Untrusted search path in auth_query connection handler in PgBouncer before 1.25.1 allows an unauthenticated attacker to execute arbitrary SQL during authenticatCVE-2025-12819 · Other software · Pgbouncer · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007High 7.5
Untrusted search path in auth_query connection handler in PgBouncer before 1.25.1 allows an unauthenticated attacker to execute arbitrary SQL during authentication via a malicious search_path parameter in the StartupMessage.
- Product
- Pgbouncer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpgbouncer.orglists.debian.org
Apr 16, 2025Password can be used past expiry in PgBouncer due to auth_query not taking into account Postgres its VALID UNTIL value, which allows an attacker to log in with CVE-2025-2291 · Other software · Pgbouncer · reported by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007High 8.1
Password can be used past expiry in PgBouncer due to auth_query not taking into account Postgres its VALID UNTIL value, which allows an attacker to log in with an already expired password
- Product
- Pgbouncer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpgbouncer.orglists.debian.org
Nov 22, 2021When PgBouncer is configured to use "cert" authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established,CVE-2021-3935 · Other software · Pgbouncer · reported by patrick@puiterwijk.orgHigh 8.1
When PgBouncer is configured to use "cert" authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of TLS certificate verification and encryption. This flaw affects PgBouncer versions prior to 1.16.1.
- Product
- Pgbouncer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpgbouncer.orgbugzilla.redhat.com
May 23, 2017PgBouncer 1.6.x before 1.6.1, when configured with auth_user, allows remote attackers to gain login access as auth_user via an unknown username.CVE-2015-6817 · Other software · Pgbouncer · reported by security@debian.orgHigh 8.1
PgBouncer 1.6.x before 1.6.1, when configured with auth_user, allows remote attackers to gain login access as auth_user via an unknown username.
- Product
- Pgbouncer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcomments.gmane.orgopenwall.com
May 23, 2017PgBouncer before 1.5.5 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by sending a password packet before a startup pCVE-2015-4054 · Other software · Pgbouncer · reported by security@debian.orgHigh 7.5
PgBouncer before 1.5.5 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by sending a password packet before a startup packet.
- Product
- Pgbouncer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.comsecurityfocus.com
Nov 18, 2012The add_database function in objects.c in the pgbouncer pooler 1.5.2 for PostgreSQL allows remote attackers to cause a denial of service (daemon outage) via a lCVE-2012-4575 · Other software · Pgbouncer Project · reported by Red HatMedium 5
The add_database function in objects.c in the pgbouncer pooler 1.5.2 for PostgreSQL allows remote attackers to cause a denial of service (daemon outage) via a long database name in a request.
- Product
- Pgbouncer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugs.debian.orggit.postgresql.org
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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