CVE-2026-34355

Description

A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend. Users are recommended to upgrade to version 2.4.68, which fixes this issue.

PUBLISHED Reserved 2026-03-27 | Published 2026-06-08 | Updated 2026-06-08 | Assigner apache

Problem types

CWE-122 Heap-based Buffer Overflow

Product status

Timeline

Credits

Elhanan Haenel finder

Junhui Lee finder

References

www.openwall.com/lists/oss-security/2026/06/08/6

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

cve.org (CVE-2026-34355)

nvd.nist.gov (CVE-2026-34355)

Download JSON