ClosedCriticalPatched

Apache HTTP Server: HTTP Server Improper Escaping of Output Vulnerability

Apache HTTP Server

Apache HTTP Server contains an improper escaping of output vulnerability in mod_rewrite that allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure. Added to CISA KEV on 2025-05-01.

Why this severity: CVSS 9.1 (CISA ADP, v3.1); actively exploited (CISA KEV)

Started: May 1, 2025
Closed: May 1, 2025
CVE: CVE-2024-38475

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Updated May 1, 2025

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

May 1, 2025
CISA added CVE-2024-38475 to the KEV catalog (due 2025-05-22).

Advisories3

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).

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