CriticalCritical vulnerability
CVE-2026-56154 (CVSS 9.8)
NVD · officialPublished Oct 1, 2026Risk 50/100
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.
Technical details
CVSS
9.8
AV:NetworkAC:LowPR:NoneUI:NoneC:HighI:HighA:High
Evidence and sources
This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.
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