CVE-2026-6665

CVSS Score & Metrics

Base Score

8.1 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H                                    

Vulnerability 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.

Vulnerability Details

Published Date

May 09, 2026

Last Modified

May 14, 2026

CWE ID

CWE-121

Source

NVD

Vendor

pgbouncer

Product

pgbouncer

External References

https://www.pgbouncer.org/changelog.html#pgbouncer-125x

CVSS Score & Metrics

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Vulnerability Details

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