CVE-2023-0836

Published: Mar 29, 2023Modified: Jun 17, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

An information leak vulnerability was discovered in HAProxy 2.1, 2.2 before 2.2.27, 2.3, 2.4 before 2.4.21, 2.5 before 2.5.11, 2.6 before 2.6.8, 2.7 before 2.7.1. There are 5 bytes left uninitialized in the connection buffer when encoding the FCGI_BEGIN_REQUEST record. Sensitive data may be disclosed to configured FastCGI backends in an unexpected way.

Affected (7)

Products: Haproxy: Haproxy

Haproxy

1 product

Haproxy

Configuration A

7 vulnerable

Vulnerable Software	Affected Versions
Haproxy Haproxy	From 2.2.0 to 2.2.27
Haproxy Haproxy	From 2.4.0 to 2.4.21
Haproxy Haproxy	From 2.5.0 to 2.5.11
Haproxy Haproxy	From 2.6.0 to 2.6.8
Haproxy Haproxy	Version 2.1.0
Haproxy Haproxy	Version 2.3.0
Haproxy Haproxy	Version 2.7.0