Exploit for CVE-2026-6664

PgBouncer Crash PoC This repository contains a local proof of...

CVE-2026-6665

A flaw was found in PgBouncer, a lightweight connection pooler for PostgreSQL. A malicious backend server can exploit a vulnerability in the Salted Challenge Response Authentication Mechanism SCRAM code. By sending a specially crafted server-final-message with an excessively long nonce, the flaw...

BIT-PGBOUNCER-2026-6667 PgBouncer missing authorization check in KILL_CLIENT admin command

PgBouncer before 1.25.2 did not perform an appropriate authorization check for the KILLCLIENT 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 adminusers...

BIT-PGBOUNCER-2026-6666 PgBouncer crash in kill_pool_logins_server_error

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...

BIT-PGBOUNCER-2026-6665 PgBouncer buffer overflow in SCRAM

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...

BIT-PGBOUNCER-2026-6664 PgBouncer integer overflow in PgBouncer network packet parsing

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...

PT-2026-40289

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...

PT-2026-40291

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...

PT-2026-40288

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...

PT-2026-40290

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...

PgBouncer crash in kill_pool_logins_server_error

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PgBouncer missing authorization check in KILL_CLIENT admin command

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PgBouncer buffer overflow in SCRAM

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PgBouncer integer overflow in PgBouncer network packet parsing

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CVE-2026-6665

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...

DEBIAN-CVE-2026-6666

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...

DEBIAN-CVE-2026-6665

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...

CVE-2026-6666

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...

CVE-2026-6667

PgBouncer before 1.25.2 did not perform an appropriate authorization check for the KILLCLIENT 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 adminusers...

DEBIAN-CVE-2026-6667

PgBouncer before 1.25.2 did not perform an appropriate authorization check for the KILLCLIENT 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 adminusers...