{"id":"CVE-2013-4303","aliases":["DEBIAN-CVE-2013-4303","EUVD-2013-4197","GHSA-rxq7-cw42-v5ch","MGASA-2013-0276","UBUNTU-CVE-2013-4303"],"status":"published","title":"includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x...","description":"includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of \".\" (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01527,"percentile":0.74868,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2013-09-13T20:15:05Z","modified":"2026-09-01T20:03:18Z","fixes":[{"ecosystem":"Debian:12","package":"mediawiki","fixed_in":["1:1.19.8+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"mediawiki","fixed_in":["1:1.19.8+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mediawiki","fixed_in":["1:1.19.8+dfsg-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.19.8+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.19.8+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.19.8+dfsg-1"}]}]},{"source":"osv","ecosystem":"Mageia:2","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.7-1.mga2"}]}],"bundled":3},{"source":"osv","ecosystem":"Mageia:3","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.7-1.mga3"}]}],"bundled":3}],"products":[{"vendor":"mediawiki","product":"mediawiki"},{"vendor":"wikimedia foundation","product":"mediawiki"}],"references":[{"url":"http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-September/000133.html","tags":["x_refsource_MISC","x_transferred","Mailing List","Patch","Vendor Advisory","advisory","article","fix","web"]},{"url":"http://seclists.org/oss-sec/2013/q3/553","tags":["x_refsource_MISC","x_transferred","Mailing List","Third Party Advisory","advisory","article"]},{"url":"https://bugzilla.wikimedia.org/show_bug.cgi?id=52746","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Vendor Advisory","advisory","evidence","fix","report"]},{"url":"http://www.securityfocus.com/bid/62194","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/86897","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4303"},{"url":"https://github.com/advisories/GHSA-rxq7-cw42-v5ch"},{"url":"https://security-tracker.debian.org/tracker/CVE-2013-4303","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2013-0276.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=11157","tags":["report"]},{"url":"https://www.mediawiki.org/wiki/Release_notes/1.20","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2013-4303","tags":["report"]},{"url":"https://phabricator.wikimedia.org/T54746","tags":["report"]},{"url":"https://www.mediawiki.org/wiki/Release_notes/1.19#MediaWiki_1.19.8","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2013-4303","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2013-4303","description":"includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of \".\" (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.","status":"published","published":"2019-12-11T18:30:37Z","modified":"2024-08-06T16:38:01.957Z","updated_at":"2026-11-02T14:34:58.193873Z"}],"euvd":[{"id":"EUVD-2013-4197","description":"includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of \".\" (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.","status":"published","published":"2019-12-11T18:30:37Z","modified":"2024-08-06T16:38:01Z","updated_at":"2026-11-03T01:56:32.70868Z"}],"ghsa":[{"id":"GHSA-rxq7-cw42-v5ch","title":"includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x...","description":"includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of \".\" (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.","status":"published","published":"2022-05-05T00:29:10Z","modified":"2023-02-01T05:01:51Z","updated_at":"2026-11-02T14:49:47.696223Z"}],"nvd":[{"id":"CVE-2013-4303","description":"includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of \".\" (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.","status":"published","published":"2019-12-11T19:15:12.217Z","modified":"2026-06-16T23:56:59.45Z","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","assessor":"primary"},{"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":"2026-11-02T14:02:52.545039Z"}],"osv":[{"id":"CVE-2013-4303","description":"includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of \".\" (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.","status":"published","published":"2019-12-11T19:15:12Z","modified":"2026-04-16T06:26:03.986164126Z","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":"2026-11-02T15:43:59.09154Z"},{"id":"DEBIAN-CVE-2013-4303","description":"includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of \".\" (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.","status":"published","published":"2019-12-11T19:15:12.217Z","modified":"2026-09-01T20:03:18.129404894Z","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":"2026-11-02T15:45:25.514579Z"},{"id":"UBUNTU-CVE-2013-4303","description":"includes/libs/IEUrlExtension.php in the MediaWiki API in MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 does not properly detect extensions when there are an even number of \".\" (period) characters in a string, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the siprop parameter in a query action to wiki/api.php.","status":"withdrawn","published":"2019-12-11T19:15:00Z","modified":"2025-07-16T08:10:45.838881Z","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":"2026-11-02T15:54:07.421078Z"},{"id":"MGASA-2013-0276","title":"Updated mediawiki package fixes security vulnerabilities","description":"Full path disclosure in MediaWiki before 1.20.7, when an invalid language\nis specified in ResourceLoader (CVE-2013-4301).\n\nSeveral API modules in MediaWiki before 1.20.7 allowed anti-CSRF tokens\nto be accessed via JSONP (CVE-2013-4302).\n\nAn issue with the MediaWiki API in MediaWiki before 1.20.7 where an\ninvalid property name could be used for XSS with older versions of\nInternet Explorer (CVE-2013-4303).\n","status":"published","published":"2013-09-13T20:15:05Z","modified":"2026-04-16T06:25:39.124656835Z","updated_at":"2026-11-02T15:49:39.121227Z"}]}}