CVE-2025-47947
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 products
- Almalinux, Centos, Debian, Linuxmint, Modsecurity, Red Hat, Rocky Linux, Suse
- Trustwave Modsecurity
- < 2.9.9
- Fix
- Available
- CVSS 3.1
- 7.5 HIGH
- EPSS
- 0.6% (45th percentile)
- Weakness
- CWE-1050
- NVD status
- Analyzed
- Published
- 2025-05-21
CVE-2025-47947 at NVD
No indexed exploits for CVE-2025-47947 yet
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No exploit for CVE-2025-47947 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.