VULNERABILITY INTELLIGENCE

CVE-2026-6665

CVSS score8.1 HIGH
EPSS probability0.37%
CISA KEVNot currently listed
Published2026-05-09
Last modified2026-07-24
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • f86ef6dc-4d3a-42ad-8f28-e6d5547a5007: CWE-121

Primary references