medium6.5
CVE-2025-52891
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx.
Impact
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.8 to before 2.9.11, an empty XML tag can cause a segmentation fault. If SecParseXmlIntoArgs is set to On or OnlyArgs, and the request type is application/xml, and at least one XML tag is empty (eg <foo></foo>), then a segmentation fault occurs. This issue has been patched in version 2.9.11. A workaround involves setting SecParseXmlIntoArgs to Off.
Affected products
| Product | Affected versions |
|---|---|
| Versions 2.9.8 To | before 2.9.11 |
Versions were read from the advisory text. No structured product data has been published for this record yet.