CVEvulnerability

CVE-2021-39242

7.5 HIGH Published 2021-08-17 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-08-17
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:N
Weaknesses
CWE-755

Description

An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It can lead to a situation with an attacker-controlled HTTP Host header, because a mismatch between Host and authority is mishandled.

Affected configurations

• haproxy haproxy (>= 2.2.0 < 2.2.16) • haproxy haproxy (>= 2.3.0 < 2.3.13) • haproxy haproxy (>= 2.4.0 < 2.4.3) • debian debian linux 11.0 • fedoraproject fedora 33 • fedoraproject fedora 34

Related

Weakness · CWE (1)

  • CWE-755 Improper Handling of Exceptional Conditions weakness

References