Vulnerability in Owasp-modsecurity Modsecurity
CVE-2025-48866
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions prior to 2.9.10 contain a denial of service vulnerability similar to GHSA-859r-vvv8-rm8r/CVE-2025-47947. The `sanitiseA…
EPSS: 0.011 (78.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Owasp-modsecurity Modsecurity — versions < 2.9.10
Weakness classification (CWE)
Public proof-of-concept exploits
References
- https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-f82j-8pp7-cw2w (x_refsource_CONFIRM)
- https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r (x_refsource_MISC)
- https://github.com/owasp-modsecurity/ModSecurity/commit/3a54ccea62d3f7151bb08cb78d60c5e90b53ca2e (x_refsource_MISC)
- https://github.com/owasp-modsecurity/ModSecurity/wiki/Reference-Manual-(v2.x)#sanitisearg (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-48866?
- CVE-2025-48866 is a high-severity vulnerability in Owasp-modsecurity Modsecurity, classified under CWE-1050. CVSS score: 7.5/10. Published 2025-06-02.
- How severe is CVE-2025-48866?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-48866 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.