CVE-2026-42536 PUBLISHED

Apache HTTP Server: mod_xml2enc heap overflow

Assigner: apache
Reserved: 28.04.2026 Published: 08.06.2026 Updated: 08.06.2026

Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted content

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

Users are recommended to upgrade to version 2.4.68, which fixes the issue.

Product Status

Vendor Apache Software Foundation
Product Apache HTTP Server
Versions Default: unaffected
  • affected from 2.4.0 to 2.4.67 (incl.)

Credits

  • Zhenpeng (Leo) Lin at depthfirst finder

References

Problem Types

  • CWE-122 Heap-based Buffer Overflow CWE