CVE-2026-6664 HIGH

CVE-2026-6664: PgBouncer integer overflow in PgBouncer network packet parsing

Vendor N/A
Product PgBouncer
Weakness CWE-190
Published May 9, 2026
Last update May 11, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 9, 2026 CVE published
May 11, 2026 Record updated