CVE-2026-56154

CriticalCVSS 9.8/10Last modified Oct 5, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published
Oct 1, 2026
Last modified
Oct 5, 2026
NVD status
Analyzed

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CVE-2026-56154: Critical severity, CVSS 9.8 | Vulnix