modsecurity-apache: ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx
CVE-2025-52891 is fixed in 6 products on 1 platform, first by DEBIAN-CVE-2025-52891, released July 2, 2025. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| mod_security · amzn 2023 | 2.9.11-1.amzn2023.0.1 | ALAS2023-2025-1139 | Aug 5, 2025 |
| mod_security-debuginfo · amzn 2023 | 2.9.11-1.amzn2023.0.1 | ALAS2023-2025-1139 | Aug 5, 2025 |
| mod_security-debugsource · amzn 2023 | 2.9.11-1.amzn2023.0.1 | ALAS2023-2025-1139 | Aug 5, 2025 |
| mod_security-mlogc · amzn 2023 | 2.9.11-1.amzn2023.0.1 | ALAS2023-2025-1139 | Aug 5, 2025 |
| mod_security-mlogc-debuginfo · amzn 2023 | 2.9.11-1.amzn2023.0.1 | ALAS2023-2025-1139 | Aug 5, 2025 |
| modsecurity-apache · Debian 13.5 (trixie) | 2.9.11-1 | DEBIAN-CVE-2025-52891 | Jul 2, 2025 |
| modsecurity-apache · Debian 14 | 2.9.11-1 | DEBIAN-CVE-2025-52891 | Jul 2, 2025 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.