{"id":"CVE-2020-25814","aliases":["BIT-mediawiki-2020-25814","DEBIAN-CVE-2020-25814","DLA-2379-1","DSA-4767-1","EUVD-2022-2452","GHSA-4vr7-m8p8-434h","MGASA-2020-0381","UBUNTU-CVE-2020-25814"],"status":"published","title":"MediaWiki Cross-site Scripting (XSS) vulnerability","description":"In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an \u003ca\u003e tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an \u003ca href =\"javascript... that executes when clicked.","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":"2026-11-10","score":0.0135,"percentile":0.71734,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2020-09-25T00:00:00Z","modified":"2026-10-26T12:01:04Z","fixes":[{"ecosystem":"Packagist","package":"mediawiki/core","fixed_in":["1.31.9","1.34.3","1.35.0"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"mediawiki","fixed_in":["1.31.10","1.34.4"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"mediawiki","fixed_in":["1:1.35.0-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"mediawiki","fixed_in":["1:1.35.0-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mediawiki","fixed_in":["1:1.35.0-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.31.0"},{"fixed":"1.31.9"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.32.0"},{"fixed":"1.34.3"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.35.0-rc.0"},{"fixed":"1.35.0"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"mediawiki","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.31.10"},{"introduced":"1.32.0"},{"fixed":"1.34.4"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.35.0-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.35.0-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.35.0-1"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.27.7-1~deb9u4"}]}],"versions":["1:1.27.3-1","1:1.27.4-1","1:1.27.4-1~bpo8+1","1:1.27.4-1~deb9u1","1:1.27.4-2","1:1.27.4-3","1:1.27.5-1~deb9u1","1:1.27.6-1~deb9u1","1:1.27.7-1~deb9u1","1:1.27.7-1~deb9u2","1:1.27.7-1~deb9u3"],"bundled":4},{"source":"osv","ecosystem":"Debian:10","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.31.10-1~deb10u1"}]}],"versions":["1:1.31.2-1","1:1.31.4-1","1:1.31.4-1~deb10u1","1:1.31.5-1","1:1.31.5-2","1:1.31.5-3","1:1.31.6-1","1:1.31.6-1~deb10u1","1:1.31.7-1","1:1.31.7-1~deb10u1","1:1.31.8-1"],"bundled":8},{"source":"osv","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.31.0"},{"fixed":"1.31.9"}]}],"versions":["1.31.0","1.31.1","1.31.2","1.31.3","1.31.4","1.31.5","1.31.6","1.31.7","1.31.8"]},{"source":"osv","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.32.0"},{"fixed":"1.34.3"}]}],"versions":["1.32.0","1.32.1","1.32.2","1.32.3","1.32.4","1.32.5","1.32.6","1.33.0","1.33.0-rc.0","1.33.1","1.33.2","1.33.3","1.33.4","1.34.0","1.34.0-rc.0","1.34.0-rc.1","1.34.1","1.34.2"]},{"source":"osv","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.35.0-rc.0"},{"fixed":"1.35.0"}]}],"versions":["1.35.0-rc.0","1.35.0-rc.1","1.35.0-rc.2","1.35.0-rc.3"]},{"source":"osv","ecosystem":"Mageia:7","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.31.10-1.mga7"}]}],"bundled":7},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.27.3-1","1:1.27.4-1","1:1.27.4-2","1:1.27.4-3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.31.2-1ubuntu1","1:1.31.5-1","1:1.31.5-1ubuntu1","1:1.31.5-2","1:1.31.5-3","1:1.31.5-3ubuntu1","1:1.31.6-1","1:1.31.7-1","1:1.31.7-1ubuntu0.1~esm1"]}],"products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"mediawiki","product":"mediawiki"}],"references":[{"url":"https://www.mediawiki.org/wiki/ResourceLoader/Core_modules#mediawiki.jqueryMsg","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","web","advisory","report"]},{"url":"https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html","tags":["x_refsource_CONFIRM","x_transferred","Mailing List","Release Notes","Vendor Advisory","web","advisory","report"]},{"url":"https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html","tags":["x_refsource_MISC","x_transferred","Mailing List","Release Notes","Vendor Advisory","web","advisory","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25814","tags":["web","advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25814.yaml","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6","tags":["web"]},{"url":"https://phabricator.wikimedia.org/T86738","tags":["web","report"]},{"url":"https://github.com/advisories/GHSA-4vr7-m8p8-434h"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-25814","tags":["advisory"]},{"url":"https://github.com/wikimedia/mediawiki","tags":["package"]},{"url":"https://advisories.mageia.org/MGASA-2020-0381.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=27331","tags":["report"]},{"url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-September/000260.html","tags":["web"]},{"url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-September/000262.html","tags":["web"]},{"url":"https://www.debian.org/security/2020/dsa-4767","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2020-25814","tags":["report"]},{"url":"https://lists.wikimedia.org/pipermail/wikitech-l/2020-September/093888.html","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-25814","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-25814","description":"In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an \u003ca\u003e tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an \u003ca href =\"javascript... that executes when clicked.","status":"published","published":"2020-09-27T20:29:44Z","modified":"2024-08-04T15:40:36.987Z","updated_at":"2026-11-02T14:35:48.52216Z"}],"euvd":[{"id":"EUVD-2022-2452","description":"In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an \u003ca\u003e tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an \u003ca href =\"javascript... that executes when clicked.","status":"published","published":"2020-09-27T20:29:44Z","modified":"2024-08-04T15:40:36Z","updated_at":"2026-11-03T03:07:16.308974Z"}],"ghsa":[{"id":"GHSA-4vr7-m8p8-434h","title":"MediaWiki Cross-site Scripting (XSS) vulnerability","description":"In MediaWiki before 1.31.9 and 1.32.x through 1.34.x before 1.34.3, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an \u003ca\u003e tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an \u003ca href =\"javascript... that executes when clicked.","status":"published","published":"2022-05-24T17:29:42Z","modified":"2024-05-17T21:56:22Z","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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:49.987036Z"}],"nvd":[{"id":"CVE-2020-25814","description":"In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an \u003ca\u003e tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an \u003ca href =\"javascript... that executes when clicked.","status":"published","published":"2020-09-27T21:15:12.687Z","modified":"2026-06-17T03:07:20.177Z","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":"2026-11-02T14:06:17.70091Z"}],"osv":[{"id":"CVE-2020-25814","description":"In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an \u003ca\u003e tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an \u003ca href =\"javascript... that executes when clicked.","status":"published","published":"2020-09-27T21:15:12.687Z","modified":"2026-10-24T10:30:46.868751984Z","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":"2026-11-02T15:44:15.879068Z"},{"id":"DEBIAN-CVE-2020-25814","description":"In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an \u003ca\u003e tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an \u003ca href =\"javascript... that executes when clicked.","status":"published","published":"2020-09-27T21:15:12.687Z","modified":"2026-10-26T12:01:04.880764363Z","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":"2026-11-02T15:45:33.729655Z"},{"id":"GHSA-4vr7-m8p8-434h","title":"MediaWiki Cross-site Scripting (XSS) vulnerability","description":"In MediaWiki before 1.31.9 and 1.32.x through 1.34.x before 1.34.3, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an \u003ca\u003e tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an \u003ca href =\"javascript... that executes when clicked.","status":"published","published":"2022-05-24T17:29:42Z","modified":"2024-05-19T02:24:07.692788Z","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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:37.528068Z"},{"id":"UBUNTU-CVE-2020-25814","description":"In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an \u003ca\u003e tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an \u003ca href =\"javascript... that executes when clicked.","status":"published","published":"2020-09-27T21:15:00Z","modified":"2026-05-27T10:17:04.980923839Z","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":"2026-11-02T15:54:23.905183Z"},{"id":"BIT-mediawiki-2020-25814","description":"In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an \u003ca\u003e tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an \u003ca href =\"javascript... that executes when clicked.","status":"published","published":"2024-03-06T11:14:01.094Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"},{"id":"DLA-2379-1","title":"mediawiki - security update","status":"published","published":"2020-09-25T00:00:00Z","modified":"2026-03-09T01:17:52.590019Z","updated_at":"2026-11-02T15:46:10.712745Z"},{"id":"DSA-4767-1","title":"mediawiki - security update","status":"published","published":"2020-09-25T00:00:00Z","modified":"2026-03-09T02:10:47.322306Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"MGASA-2020-0381","title":"Updated mediawiki packages fix security vulnerability","description":"Multiple security issues were discovered in MediaWiki: SpecialUserRights could\nleak whether a user existed or not, multiple code paths lacked HTML\nsanitisation allowing for cross-site scripting and TOTP validation applied\ninsufficient rate limiting against brute force attempts (CVE-2020-25812,\nCVE-2020-25813, CVE-2020-25814, CVE-2020-25815, CVE-2020-25827,\nCVE-2020-25828).\n\nPossible issues with actors not being loaded from the correct database or wiki\n(CVE-2020-25869).\n","status":"published","published":"2020-09-30T10:01:40Z","modified":"2026-04-16T04:40:52.804701258Z","updated_at":"2026-11-02T15:49:41.509337Z"}]}}