CVE-2026-33857

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

State: Published
Severity: 5.3 Medium
Published: May 4, 2026
Updated: May 4, 2026
Reserved: Mar 24, 2026

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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.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
Apache HTTP ServerApache Software Foundation	2.4.66 and earlierAffected

References

https://httpd.apache.org/security/vulnerabilities_24.htmlvendor-advisory
http://www.openwall.com/lists/oss-security/2026/05/04/15

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