{"id":"UBUNTU-CVE-2025-52891","details":"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 \u003cfoo\u003e\u003c/foo\u003e), then a segmentation fault occurs. This issue has been patched in version 2.9.11. A workaround involves setting SecParseXmlIntoArgs to Off.","modified":"2026-05-20T16:23:33.926097245Z","published":"2025-07-02T15:15:00Z","upstream":["CVE-2025-52891"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-52891"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-52891"},{"type":"REPORT","url":"https://github.com/owasp-modsecurity/ModSecurity/commit/ecd7b9736836eee391d25f35d5bd06a3ce35a45d"},{"type":"REPORT","url":"https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-gw9c-4wfm-vj3x"}],"affected":[{"package":{"name":"modsecurity","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/modsecurity?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.3-1","3.0.4-1","3.0.4-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.0.4-1build1","binary_name":"libmodsecurity3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-52891.json"}},{"package":{"name":"modsecurity","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/modsecurity?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.4-2","3.0.6-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodsecurity3","binary_version":"3.0.6-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-52891.json"}},{"package":{"name":"modsecurity","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/modsecurity?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.10-1","3.0.11-1","3.0.12-1","3.0.12-1.1build1","3.0.12-1.1build2"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodsecurity3t64","binary_version":"3.0.12-1.1build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-52891.json"}},{"package":{"name":"modsecurity","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/modsecurity?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.13-1","3.0.14-1","3.0.14-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodsecurity3t64","binary_version":"3.0.14-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-52891.json"}},{"package":{"name":"modsecurity","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/modsecurity?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.14-1build1","3.0.14-1build2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.0.14-1build2","binary_name":"libmodsecurity3t64"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-52891.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}