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.
Scores
CVSS v3
7.5
EPSS
0.0001
EPSS Percentile
0.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-200
CWE-459
Status
published
Products (4)
haproxy/haproxy
2.1.0
haproxy/haproxy
2.3.0
haproxy/haproxy
2.7.0
haproxy/haproxy
2.2.0 - 2.2.27
Published
Mar 29, 2023
Tracked Since
Feb 18, 2026