{"id":"CVE-2025-54571","aliases":["AZL-66087","AZL-66111","BIT-modsecurity-2025-54571","BIT-modsecurity2-2025-54571","DEBIAN-CVE-2025-54571","DLA-4294-1","EUVD-2025-23662","GHSA-cg44-9m43-3f9v","OESA-2025-2012","OESA-2025-2013","OESA-2025-2014","OESA-2025-2015","OESA-2025-2016","OESA-2025-2062","SUSE-SU-2025:03422-1","SUSE-SU-2025:03423-1","UBUNTU-CVE-2025-54571","openSUSE-SU-2025:15456-1"],"status":"published","title":"ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure","description":"ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00349,"percentile":0.28696,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-252","CWE-79"],"published":"2025-08-05T23:39:40Z","modified":"2026-11-05T05:36:30Z","fixes":[{"ecosystem":"Bitnami","package":"modsecurity","fixed_in":["2.9.12"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"modsecurity2","fixed_in":["2.9.12"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"modsecurity-apache","fixed_in":["2.9.7-1+deb12u2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"modsecurity-apache","fixed_in":["2.9.11-1+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"modsecurity-apache","fixed_in":["2.9.12-2"],"sources":["osv"]},{"ecosystem":"Debian:11","package":"modsecurity-apache","fixed_in":["2.9.3-3+deb11u5"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS","package":"mod_security","fixed_in":["2.9.12-1.oe2403"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP1","package":"mod_security","fixed_in":["2.9.12-1.oe2403sp1"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP2","package":"mod_security","fixed_in":["2.9.12-1.oe2403sp2"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP3","package":"mod_security","fixed_in":["2.9.12-1.oe2203sp3"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP4","package":"mod_security","fixed_in":["2.9.12-1.oe2203sp4"],"sources":["osv"]},{"ecosystem":"openEuler:20.03-LTS-SP4","package":"mod_security","fixed_in":["2.9.12-1.oe2003sp4"],"sources":["osv"]},{"ecosystem":"SUSE:Linux 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SP5","package":"apache2-mod_security2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.0-7.12.1"}]}]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"modsecurity","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.3-1","3.0.4-1","3.0.4-1build1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"modsecurity","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.4-2","3.0.6-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"modsecurity","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"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"modsecurity","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.13-1","3.0.14-1","3.0.14-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"modsecurity","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.14-1build2","3.0.15-1","3.0.16-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"modsecurity","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.14-1build1","3.0.14-1build2"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"apache2-mod_security2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.12-1.1"}]}]}],"products":[{"vendor":"owasp","product":"modsecurity"},{"vendor":"owasp-modsecurity","product":"modsecurity"}],"references":[{"url":"https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-cg44-9m43-3f9v","tags":["x_refsource_CONFIRM","exploit","Exploit","Vendor Advisory","advisory","report"]},{"url":"https://github.com/owasp-modsecurity/ModSecurity/issues/2514","tags":["x_refsource_MISC","Exploit","Issue Tracking","evidence","report"]},{"url":"https://github.com/owasp-modsecurity/ModSecurity/commit/6d7e8eb18f2d7d368fb8e29516fcdeaeb8d349b8","tags":["x_refsource_MISC","Patch","fix","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/09/msg00008.html","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-54571","tags":["web","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54571.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-54571","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2012","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2013","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2014","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2015","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2016","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2062","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2025/suse-su-202503422-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1247674","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2025-54571","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2025/suse-su-202503423-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-54571","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-54571","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-54571","title":"ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure","description":"ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.","status":"published","published":"2025-08-05T23:39:40.712Z","modified":"2025-11-03T18:13:36.309Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-252"],"updated_at":"2026-11-02T14:32:27.603809Z"}],"euvd":[{"id":"EUVD-2025-23662","description":"ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.","status":"published","published":"2025-08-05T23:39:40Z","modified":"2025-11-03T18:13:36Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T19:49:34.635725Z"}],"nvd":[{"id":"CVE-2025-54571","description":"ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.","status":"published","published":"2025-08-06T00:15:30.687Z","modified":"2026-06-17T09:40:19.817Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-252","CWE-79"],"updated_at":"2026-11-02T14:11:22.319351Z"}],"osv":[{"id":"CVE-2025-54571","title":"ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure","description":"ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.","status":"published","published":"2025-08-05T23:39:40.712Z","modified":"2026-10-28T02:30:39.652415856Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-252"],"updated_at":"2026-11-02T15:44:50.863921Z"},{"id":"DEBIAN-CVE-2025-54571","description":"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.","status":"published","published":"2025-08-06T00:15:30.687Z","modified":"2026-09-01T20:05:54.507615126Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:47.378563Z"},{"id":"OESA-2025-2012","title":"mod_security security update","description":"Security Fix(es):\n\nModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.(CVE-2025-54571)","status":"published","published":"2025-08-15T11:09:05Z","modified":"2026-08-18T01:18:02.963173074Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:43.127925Z"},{"id":"OESA-2025-2013","title":"mod_security security update","description":"Security Fix(es):\n\nModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.(CVE-2025-54571)","status":"published","published":"2025-08-15T11:09:05Z","modified":"2026-08-18T01:18:02.930963878Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:43.127925Z"},{"id":"OESA-2025-2014","title":"mod_security security update","description":"Security Fix(es):\n\nModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.(CVE-2025-54571)","status":"published","published":"2025-08-15T11:09:06Z","modified":"2026-08-18T01:18:02.997353251Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:43.127925Z"},{"id":"OESA-2025-2015","title":"mod_security security update","description":"Security Fix(es):\n\nModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.(CVE-2025-54571)","status":"published","published":"2025-08-15T11:09:06Z","modified":"2026-08-18T01:18:02.940637044Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:43.127925Z"},{"id":"OESA-2025-2016","title":"mod_security security update","description":"Security Fix(es):\n\nModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.(CVE-2025-54571)","status":"published","published":"2025-08-15T11:09:06Z","modified":"2026-08-18T01:18:02.935060553Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:43.127925Z"},{"id":"OESA-2025-2062","title":"mod_security security update","description":"Security Fix(es):\n\nModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.(CVE-2025-54571)","status":"published","published":"2025-08-22T11:09:08Z","modified":"2026-08-18T01:18:08.442053437Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:43.127925Z"},{"id":"UBUNTU-CVE-2025-54571","description":"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.","status":"published","published":"2025-08-06T00:15:00Z","modified":"2026-10-17T12:57:08.672692919Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:55:50.817402Z"},{"id":"AZL-66087","title":"CVE-2025-54571 affecting package mod_security 2.9.7-8","description":"ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.","status":"published","published":"2025-08-06T00:15:30Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:23.841127Z"},{"id":"AZL-66111","title":"CVE-2025-54571 affecting package mod_security 2.9.4-1","description":"ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.","status":"published","published":"2025-08-06T00:15:30Z","modified":"2026-04-21T04:37:46.449147Z","updated_at":"2026-11-02T15:28:08.354547Z"},{"id":"BIT-modsecurity-2025-54571","title":"ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure","description":"ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.","status":"published","published":"2025-08-08T05:55:15.874Z","modified":"2026-09-08T08:48:13.932102497Z","updated_at":"2026-11-02T15:28:33.072289Z"},{"id":"BIT-modsecurity2-2025-54571","title":"ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure","description":"ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11\nand 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.","status":"published","published":"2025-08-08T05:55:32.006Z","modified":"2026-09-08T08:48:13.887153151Z","updated_at":"2026-11-02T15:28:33.072289Z"},{"id":"DLA-4294-1","title":"modsecurity-apache - security update","status":"published","published":"2025-09-07T00:00:00Z","modified":"2026-03-09T02:11:09.24853Z","updated_at":"2026-11-02T15:46:12.7027Z"},{"id":"openSUSE-SU-2025:15456-1","title":"apache2-mod_security2-2.9.12-1.1 on GA media","description":"These are all security issues fixed in the apache2-mod_security2-2.9.12-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-08-18T00:00:00Z","modified":"2026-03-23T04:53:47.839798Z","updated_at":"2026-11-02T16:58:37.810934Z"},{"id":"SUSE-SU-2025:03422-1","title":"Security update for apache2-mod_security2","description":"This update for apache2-mod_security2 fixes the following issues:\n\n- CVE-2025-54571: Fixed insufficient return value handling on modsecurity leads to xss and source code disclosure (bsc#1247674)\n","status":"published","published":"2025-09-29T08:50:32Z","modified":"2026-02-04T02:38:39.184559Z","updated_at":"2026-11-02T15:53:58.883365Z"},{"id":"SUSE-SU-2025:03423-1","title":"Security update for apache2-mod_security2","description":"This update for apache2-mod_security2 fixes the following issues:\n\n- CVE-2025-54571: Fixed insufficient return value handling on modsecurity leads to xss and source code disclosure (bsc#1247674)\n","status":"published","published":"2025-09-29T08:50:52Z","modified":"2026-02-04T04:29:12.768049Z","updated_at":"2026-11-02T15:53:58.883365Z"}]}}