Vulnerability in Apache Http_server
CVE-2024-38475
Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier 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 UR…
EPSS: 1.000 (100.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
- security@apache.org (vendor-advisory, Vendor Advisory)
- security@apache.org (Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Patch)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Third Party Advisory, US Government Resource)
Frequently asked questions
- What is CVE-2024-38475?
- CVE-2024-38475 is a critical-severity vulnerability in Apache Http_server, classified under Improper Encoding or Escaping of Output. CVSS score: 9.1/10. Published 2024-07-01.
- How severe is CVE-2024-38475?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2024-38475 known to be exploited?
- Yes. CVE-2024-38475 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-05-01), indicating it is being actively exploited. 24 public proof-of-concept repositories are indexed.