Is CVE-2026-56154 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-56154?

CVE-2026-56154 has a CVSS v3 severity of CRITICAL (9.8).

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CVE-2026-56154

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.