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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade mod_security-mlogcUpgrade mod_securityUpgrade mod_security-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade mod_security-debuginfoUpgrade mod_securityUpgrade mod_security-debugsourceUpgrade mod_security-mlogcUpgrade mod_security-mlogc-debuginfo | Aug 19, 2025 | Jul 2, 2025 |
| Debian | — | Upgrade modsecurity-apache | Jul 23, 2026 | Jul 23, 2026 |
| Freebsd | — | Upgrade ap24-mod_security | Jul 9, 2025 | Jul 8, 2025 |
| Suse | — | Upgrade apache2-mod_security2 | Dec 5, 2025 | Dec 5, 2025 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub