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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.

PUBLISHED Reserved 2026-03-24 | Published 2026-05-04 | Updated 2026-05-04 | Assigner apache

Problem types

CWE-125 Out-of-bounds Read

Product status

Default status
unaffected

Any version
affected

Timeline

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

Credits

Elhanan Haenel finder

References

www.openwall.com/lists/oss-security/2026/05/04/15

httpd.apache.org/security/vulnerabilities_24.html vendor-advisory

cve.org (CVE-2026-33857)

nvd.nist.gov (CVE-2026-33857)

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