CVE-2026-6664

Published: May 9, 2026Modified: Jul 24, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 (Secondary)

Description

An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead to a crash. An unauthenticated remote attacker can crash PgBouncer with a malformed SCRAM authentication packet.

Affected (1)

Products: Pgbouncer: Pgbouncer

Pgbouncer

1 product

Pgbouncer

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Pgbouncer Pgbouncer	Before 1.25.2

Related CWEs

CWE-190

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (1)

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

Source: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

Release Notes

Timeline

No history available yet.