CVE-2025-65082: Apache HTTP Server: CGI environment variable override

[email protected] (Unknown) Thu, 04 Dec 2025 14:44:58 +0000
Newsgroups gmane.comp.apache.user,gmane.comp.apache.maven.announce
Message-ID <[email protected]>
From: Eric Covener <[email protected]>
Reply-To: <[email protected]>

Severity: low=20

Affected versions:

- Apache HTTP Server 2.4.0 through 2.4.65

Description:

Improper Neutralization of Escape, Meta, or Control Sequences vulnerability=
 in Apache HTTP Server through environment variables set via the Apache =
configuration unexpectedly superseding variables calculated by the server =
for CGI programs.

This issue affects Apache HTTP Server from 2.4.0 through 2.4.65.

Users are recommended to upgrade to version 2.4.66 which fixes the issue.

Credit:

Mattias =C3=85sander (Ume=C3=A5 University) (finder)

References:

https://httpd.apache.org/security/vulnerabilities_24.html`
https://httpd.apache.org/
https://www.cve.org/CVERecord?id=3DCVE-2025-65082

Timeline:

2025-11-14: reported
2025-12-01: fixed in 2.4.x by r1930167