Bug 2468431 (CVE-2026-6665) - CVE-2026-6665 PgBouncer: PgBouncer: Arbitrary code execution or Denial of Service via SCRAM server-final-message
Summary: CVE-2026-6665 PgBouncer: PgBouncer: Arbitrary code execution or Denial of Ser...
Keywords:
Status: NEW
Alias: CVE-2026-6665
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2476428 2476429
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-09 02:01 UTC by OSIDB Bzimport
Modified: 2026-05-12 10:35 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-05-09 02:01:23 UTC 
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.
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