https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Mon, 28 Sep 2026 12:58:28 +0000 https://vulnerability.circl.lu/vuln/fkie_cve-2026-6669 <p>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.</p> <p>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.</p> https://vulnerability.circl.lu/vuln/fkie_cve-2026-6669 https://vulnerability.circl.lu/vuln/ghsa-58j7-v2vx-r29w <p>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.</p> <p>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.</p> https://vulnerability.circl.lu/vuln/ghsa-58j7-v2vx-r29w https://vulnerability.circl.lu/vuln/rhsa-2026:70698 <p>pgbouncer: PgBouncer: Denial of Service via integer overflow in packet buffer growth pgbouncer: PgBouncer: Denial of Service via unbounded SCRAM iteration count pgbouncer: PgBouncer: Denial of Service via malformed SCRAM client-final-message</p> <p>pgbouncer: PgBouncer: Denial of Service via integer overflow in packet buffer growth pgbouncer: PgBouncer: Denial of Service via unbounded SCRAM iteration count pgbouncer: PgBouncer: Denial of Service via malformed SCRAM client-final-message</p> https://vulnerability.circl.lu/vuln/rhsa-2026:70698 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-6669 <p><strong>Affected:</strong> Ubuntu:16.04:LTS: pgbouncer, Ubuntu:18.04:LTS: pgbouncer, Ubuntu:20.04:LTS: pgbouncer, Ubuntu:22.04:LTS: pgbouncer, Ubuntu:24.04:LTS: pgbouncer, Ubuntu:26.04:LTS: pgbouncer</p> <p>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.</p> <p><strong>Affected:</strong> Ubuntu:16.04:LTS: pgbouncer, Ubuntu:18.04:LTS: pgbouncer, Ubuntu:20.04:LTS: pgbouncer, Ubuntu:22.04:LTS: pgbouncer, Ubuntu:24.04:LTS: pgbouncer, Ubuntu:26.04:LTS: pgbouncer</p> <p>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.</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-6669