CVEvulnerability

CVE-2026-6665

9.8 CRITICAL Published 2026-05-09 Modified 2026-07-24 Official page ↗
Status
Analyzed
Published
2026-05-09
Last modified
2026-07-24
Assigner
f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
CVSS 3.1 (f86ef6dc-4d3a-42ad-8f28-e6d5547a5007)
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-121

Description

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.

Affected configurations

• pgbouncer pgbouncer (< 1.25.2)

Related

Weakness · CWE (1)

  • CWE-121 Stack-based Buffer Overflow weakness

References