CVE-2026-56154

Apache HTTP Server memory corruption in mod_rewrite via lookahead rules

critical · 9.8

Fix listed

Apache HTTP Server

Published Oct 1, 2026, 16:03 UTC

Description

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.

Reported fixed versions

2.4.69

Official CVE record Read Eden case study View source and advisories

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