{"id":"CVE-2011-0508","aliases":["EUVD-2011-0528","GHSA-gfg7-fg26-2g7j"],"status":"published","title":"Cross-site scripting (XSS) vulnerability in system/modules/comments/Comments.php in Contao CMS 2...","description":"Cross-site scripting (XSS) vulnerability in system/modules/comments/Comments.php in Contao CMS 2.9.2, and possibly other versions before 2.9.3, allows remote attackers to inject arbitrary web script or HTML via the HTTP X_FORWARDED_FOR header, which is stored by system/libraries/Environment.php but not properly handled by a comments action to main.php.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0192,"percentile":0.80041,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2011-01-20T18:00:00Z","modified":"2026-06-16T23:27:31Z","products":[{"vendor":"contao","product":"contao_cms"}],"references":[{"url":"http://dev.contao.org/issues/2751","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/64679","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.osvdb.org/70440","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://secunia.com/advisories/42899","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.contao.org/news/items/contao-2_9_3.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.securityfocus.com/archive/1/515691/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://www.contao.org/changelog.html","tags":["x_refsource_CONFIRM","x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-0508"},{"url":"https://github.com/advisories/GHSA-gfg7-fg26-2g7j"}],"sources":{"cve":[{"id":"CVE-2011-0508","description":"Cross-site scripting (XSS) vulnerability in system/modules/comments/Comments.php in Contao CMS 2.9.2, and possibly other versions before 2.9.3, allows remote attackers to inject arbitrary web script or HTML via the HTTP X_FORWARDED_FOR header, which is stored by system/libraries/Environment.php but not properly handled by a comments action to main.php.","status":"published","published":"2011-01-20T18:00:00Z","modified":"2024-08-06T21:58:24.57Z","updated_at":"2026-11-02T14:35:39.447402Z"}],"euvd":[{"id":"EUVD-2011-0528","description":"Cross-site scripting (XSS) vulnerability in system/modules/comments/Comments.php in Contao CMS 2.9.2, and possibly other versions before 2.9.3, allows remote attackers to inject arbitrary web script or HTML via the HTTP X_FORWARDED_FOR header, which is stored by system/libraries/Environment.php but not properly handled by a comments action to main.php.","status":"published","published":"2011-01-20T18:00:00Z","modified":"2024-08-06T21:58:24Z","updated_at":"2026-11-03T01:56:00.140679Z"}],"ghsa":[{"id":"GHSA-gfg7-fg26-2g7j","title":"Cross-site scripting (XSS) vulnerability in system/modules/comments/Comments.php in Contao CMS 2...","description":"Cross-site scripting (XSS) vulnerability in system/modules/comments/Comments.php in Contao CMS 2.9.2, and possibly other versions before 2.9.3, allows remote attackers to inject arbitrary web script or HTML via the HTTP X_FORWARDED_FOR header, which is stored by system/libraries/Environment.php but not properly handled by a comments action to main.php.","status":"published","published":"2022-05-14T02:56:36Z","modified":"2023-02-02T05:06:54Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:52:23.774238Z"}],"nvd":[{"id":"CVE-2011-0508","description":"Cross-site scripting (XSS) vulnerability in system/modules/comments/Comments.php in Contao CMS 2.9.2, and possibly other versions before 2.9.3, allows remote attackers to inject arbitrary web script or HTML via the HTTP X_FORWARDED_FOR header, which is stored by system/libraries/Environment.php but not properly handled by a comments action to main.php.","status":"published","published":"2011-01-20T19:00:10.817Z","modified":"2026-06-16T23:27:31.813Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:02:06.042049Z"}]}}