CVE-2026-6669 Affecting pgbouncer-config package, versions <1.26.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.31% (22nd percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-PGBOUNCERCONFIG-20343753
  • published1 Oct 2026
  • disclosed23 Sept 2026

Introduced: 23 Sep 2026

NewCVE-2026-6669  (opens in a new tab)

How to fix?

Upgrade Minimos:latest pgbouncer-config to version 1.26.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pgbouncer-config package and not the pgbouncer-config package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1