CVE-2025-52891

published 2025-07-02

CVE-2025-52891: 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…

Priority P4 29 medium 6.5 CVSS 3.1

AV N AC L PR N UI R S U C N I N A H

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 ), then a segmentation fault occurs. This issue has been patched in version 2.9.11. A workaround involves setting SecParseXmlIntoArgs to Off.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
debian	modsecurity-apache	< modsecurity-apache 2.9.11-1 (forky)	modsecurity-apache 2.9.11-1 (forky)
owasp-modsecurity	modsecurity	—	—

CVSS provenance

nvd v3.1 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

osv 6.5 MEDIUM

vendor_debian 6.5 LOW

vendor_redhat 6.5 MEDIUM

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