CVE-2026-33857: Apache HTTP Server: Off-by-one OOB reads in AJP getter functions

[email protected] (Unknown) Mon, 04 May 2026 11:48:09 +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 

Affected versions:

- Apache HTTP Server through 2.4.66

Description:

Out-of-bounds Read vulnerability in mod_proxy_ajp of 

Apache HTTP Server.

This issue affects Apache HTTP Server: through 2.4.66.

Users are recommended to upgrade to version 2.4.67, which fixes the issue.

Credit:

Elhanan Haenel (finder)

References:

https://httpd.apache.org/security/vulnerabilities_24.html
https://httpd.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-33857

Timeline:

2026-03-20: Reported
2026-05-04: fixed by r1933341 in 2.4.x