CVEvulnerability
CVE-2025-47947
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2025-05-21
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-1050
Description
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case (in stable released versions): when the payload's content type is `application/json`, and there is at least one rule which does a `sanitiseMatchedBytes` action. A patch is available at pull request 3389 and expected to be part of version 2.9.9. No known workarounds are available.
Affected configurations
• trustwave modsecurity (< 2.9.9)
Related
Weakness · CWE (1)
- CWE-1050 Excessive Platform Resource Consumption within a Loop weakness
References
- https://github.com/owasp-modsecurity/ModSecurity/pull/3389 Issue Tracking, Patch
- https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r Exploit, Vendor Advisory
- https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r Exploit, Vendor Advisory