{"id":"CVE-2011-1579","aliases":["DEBIAN-CVE-2011-1579","DSA-2366-1","EUVD-2011-1580","GHSA-rwjq-pqc6-6rcp"],"status":"published","title":"The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3...","description":"The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading Style Sheets (CSS) token sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks or obtain sensitive information by using the \\2f\\2a and \\2a\\2f hex strings to surround CSS comments.","severity":{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01917,"percentile":0.79996,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2011-04-27T00:00:00Z","modified":"2026-10-23T17:47:50Z","fixes":[{"ecosystem":"Debian:12","package":"mediawiki","fixed_in":["1:1.15.5-5"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"mediawiki","fixed_in":["1:1.15.5-5"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mediawiki","fixed_in":["1:1.15.5-5"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.15.5-5"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.15.5-5"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.15.5-5"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.15.5-2squeeze2"}]}],"versions":["1:1.15.5-2","1:1.15.5-2squeeze1"],"bundled":6},{"source":"osv","ecosystem":"Debian:5.0","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.12.0-2lenny9"}]}],"versions":["1:1.12.0-2lenny2","1:1.12.0-2lenny3","1:1.12.0-2lenny3~bpo40+1","1:1.12.0-2lenny4","1:1.12.0-2lenny5","1:1.12.0-2lenny6","1:1.12.0-2lenny7","1:1.12.0-2lenny8"],"bundled":6}],"products":[{"vendor":"mediawiki","product":"mediawiki"}],"references":[{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058588.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://bugzilla.wikimedia.org/show_bug.cgi?id=28450","tags":["x_refsource_CONFIRM","x_transferred","report"]},{"url":"http://www.vupen.com/english/advisories/2011/0978","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"http://www.mediawiki.org/wiki/Special:Code/MediaWiki/85856","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Patch","evidence","fix"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059235.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/47354","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://secunia.com/advisories/44142","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058910.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://www.vupen.com/english/advisories/2011/1151","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/66738","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"http://www.debian.org/security/2011/dsa-2366","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=696360","tags":["x_refsource_CONFIRM","x_transferred","report"]},{"url":"http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000096.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.vupen.com/english/advisories/2011/1100","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059232.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=695577","tags":["x_refsource_CONFIRM","x_transferred","report"]},{"url":"http://openwall.com/lists/oss-security/2011/04/13/15","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1579"},{"url":"https://github.com/advisories/GHSA-rwjq-pqc6-6rcp"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-1579","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2011-1579","description":"The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading Style Sheets (CSS) token sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks or obtain sensitive information by using the \\2f\\2a and \\2a\\2f hex strings to surround CSS comments.","status":"published","published":"2011-04-27T00:00:00Z","modified":"2024-08-06T22:28:41.908Z","updated_at":"2026-11-02T14:35:38.711857Z"}],"euvd":[{"id":"EUVD-2011-1580","description":"The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading Style Sheets (CSS) token sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks or obtain sensitive information by using the \\2f\\2a and \\2a\\2f hex strings to surround CSS comments.","status":"published","published":"2011-04-27T00:00:00Z","modified":"2024-08-06T22:28:41Z","updated_at":"2026-11-03T01:55:56.243798Z"}],"ghsa":[{"id":"GHSA-rwjq-pqc6-6rcp","title":"The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3...","description":"The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading Style Sheets (CSS) token sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks or obtain sensitive information by using the \\2f\\2a and \\2a\\2f hex strings to surround CSS comments.","status":"published","published":"2022-05-17T02:00:24Z","modified":"2023-02-03T05:06:29Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:53:54.776142Z"}],"nvd":[{"id":"CVE-2011-1579","description":"The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading Style Sheets (CSS) token sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks or obtain sensitive information by using the \\2f\\2a and \\2a\\2f hex strings to surround CSS comments.","status":"published","published":"2011-04-27T00:55:04.6Z","modified":"2026-06-16T23:29:40.157Z","cvss":[{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:07.221228Z"}],"osv":[{"id":"CVE-2011-1579","description":"The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading Style Sheets (CSS) token sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks or obtain sensitive information by using the \\2f\\2a and \\2a\\2f hex strings to surround CSS comments.","status":"published","published":"2011-04-27T00:55:04Z","modified":"2026-04-10T03:41:45.904265Z","updated_at":"2026-11-02T15:43:58.279353Z"},{"id":"DEBIAN-CVE-2011-1579","description":"The checkCss function in includes/Sanitizer.php in the wikitext parser in MediaWiki before 1.16.3 does not properly validate Cascading Style Sheets (CSS) token sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks or obtain sensitive information by using the \\2f\\2a and \\2a\\2f hex strings to surround CSS comments.","status":"published","published":"2011-04-27T00:55:04.6Z","modified":"2026-10-23T17:47:50.22706793Z","updated_at":"2026-11-02T15:45:24.612044Z"},{"id":"DSA-2366-1","title":"mediawiki - multiple","status":"published","published":"2011-12-18T00:00:00Z","modified":"2026-03-09T01:18:37.854939Z","updated_at":"2026-11-02T15:46:15.108335Z"}]}}