CVE-2021-39242

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-755

Affected software

No affected versions have been published.

Timeline

Published
Aug 17, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

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