CVE-2024-38475: Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.
Description
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 URL, resulting in code execution or source code disclosure.
Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected. Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained.
Known Exploited
🚨 Marked as known exploited on May 1st, 2025 (4 days ago).
Classification
CVE ID: CVE-2024-38475
Affected Products
Vendor: Apache Software Foundation
Product: Apache HTTP Server
Nuclei Template
http/cves/2024/CVE-2024-38475.yaml
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.04% (probability of being exploited)
EPSS Percentile: 11.98% (scored less or equal to compared to others)
EPSS Date: 2025-03-14 (when was this score calculated)
References
https://httpd.apache.org/security/vulnerabilities_24.htmlhttps://security.netapp.com/advisory/ntap-20240712-0001/