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.
Published: 2026-05-09
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Do not configure SCRAM for client authentication

Tracking

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Advisories

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History

Thu, 14 May 2026 19:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:pgbouncer:pgbouncer:*:*:*:*:*:*:*:*

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'}


Subscriptions

Pgbouncer Pgbouncer
cve-icon MITRE

Status: PUBLISHED

Assigner: PostgreSQL

Published:

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 : Analyzed

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

Modified: 2026-05-14T18:52:42.090

Link: CVE-2026-6664

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-09T03:30:24Z

Weaknesses