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CVE-2026-56154

Apache HTTP Server: mod_rewrite use-after-free via %{LA-U:HTTP:...}

Published
Last modified
Status
published
Known exploitation
Not listed in CISA KEV
Public exploit
None on Exploit-DB
CISA SSVC
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total
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Decision points from CISA's Vulnrichment, assessed (SSVC 2.0.3).

SSVC documentation

Summary

Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...}) This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Affected versions

  • Apache Software Foundation Apache HTTP Server

    From 2.4.0 · through 2.4.68

References 1

httpd.apache.org