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ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. For example, we have demonstrated the potential for XSS and arbitrary script source code disclosure in the latest version of mod_security2. This issue is fixed in version 2.9.12.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade mod_security-debuginfoUpgrade mod_security-mlogcUpgrade mod_security | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade mod_security-mlogc-debuginfoUpgrade mod_security-debuginfoUpgrade mod_securityUpgrade mod_security-debugsourceUpgrade mod_security-mlogc | Sep 9, 2025 | Aug 5, 2025 |
| Debian | — | Upgrade modsecurity-apache | Sep 8, 2025 | Sep 8, 2025 |
| Oracle Httpserver | — | Apply patch 38856415 to Oracle HTTP Server 12.2.1.4.0.Apply patch 38853418 to Oracle HTTP Server 14.1.2.0.0. | Sep 30, 2026 | Aug 5, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Aug 5, 2025 |
| Suse | — | Upgrade apache2-mod_security2 | Dec 5, 2025 | Sep 29, 2025 |
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