HIGHCVE-2026-6665Published Modified CNA PostgreSQL
CVE-2026-6665: PgBouncer buffer overflow in SCRAM
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.
Metrics
- CVSS v3.1
- 8.1
- Severity
- HIGH
- Fixed in
- 1.25.2
- Affected Products
- 1
Fix available
1.25.2
Affected packages
- n/a / PgBouncer< 1.25.2 (from 0)
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HReferences