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Message-ID: <0ef2c601-406b-2c68-16c7-5e558b7e0c8a@apache.org>
Date: Mon, 08 Jun 2026 12:50:42 +0000
From: Eric Covener <covener@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-43951: Apache HTTP Server: OOB Read in
`merge_response_headers` can cause crash
Severity: moderate
Affected versions:
- Apache HTTP Server 2.4.0 through 2.4.67
Description:
Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response languages.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
Credit:
Zhenpeng (Leo) Lin at depthfirst (finder)
References:
https://httpd.apache.org/security/vulnerabilities_24.html
https://httpd.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-43951
Timeline:
2026-04-27: reported
2026-06-05: fixed in 2.4.x by r1935006
2026-06-08: 2.4.68 released
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