Apache HTTP Server Improper Escaping of Output Vulnerability (CVE-2024-38475)
Severity: critical · Patch status: patched · Since 2025-05-01 · CVE-2024-38475
Apache HTTP Server contains an improper escaping of output vulnerability in modrewrite 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. CISA added CVE-2024-38475 to its Known Exploited Vulnerabilities catalog on May 1, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by May 22, 2025 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
