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.
History

Mon, 11 May 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 09 May 2026 02:45:00 +0000

Type Values Removed Values Added
First Time appeared Pgbouncer
Pgbouncer pgbouncer
Vendors & Products Pgbouncer
Pgbouncer pgbouncer

Sat, 09 May 2026 01:15:00 +0000

Type Values Removed Values Added
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.
Title PgBouncer integer overflow in PgBouncer network packet parsing
Weaknesses CWE-190
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: PostgreSQL

Published: 2026-05-09T00:43:42.640Z

Updated: 2026-05-11T14:28:49.277Z

Reserved: 2026-04-20T12:25:43.095Z

Link: CVE-2026-6664

cve-icon Vulnrichment

Updated: 2026-05-11T14:28:45.416Z

cve-icon NVD

Status : Received

Published: 2026-05-09T01:16:08.863

Modified: 2026-05-09T01:16:08.863

Link: CVE-2026-6664

cve-icon Redhat

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