{"id":"CVE-2020-10960","aliases":["BIT-mediawiki-2020-10960","DEBIAN-CVE-2020-10960","DSA-4651-1","EUVD-2022-4752","GHSA-pfm2-mqwj-ggm5","MGASA-2020-0167","UBUNTU-CVE-2020-10960"],"status":"published","title":"MediaWiki makeCollapsible allows applying event handler to any CSS selector","description":"In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01152,"percentile":0.67171,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-116","CWE-74"],"published":"2020-04-02T00:00:00Z","modified":"2026-10-26T12:00:17Z","fixes":[{"ecosystem":"Packagist","package":"mediawiki/core","fixed_in":["1.31.7","1.33.3","1.34.1"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"mediawiki","fixed_in":["1.34.1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"mediawiki","fixed_in":["1:1.31.7-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"mediawiki","fixed_in":["1:1.31.7-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"mediawiki","fixed_in":["1:1.31.7-1"],"sources":["osv"]},{"ecosystem":"Debian:10","package":"mediawiki","fixed_in":["1:1.31.7-1~deb10u1"],"sources":["osv"]},{"ecosystem":"Mageia:7","package":"mediawiki","fixed_in":["1.31.7-1.mga7"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.31.0"},{"fixed":"1.31.7"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.33.0"},{"fixed":"1.33.3"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.34.0"},{"fixed":"1.34.1"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"mediawiki","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.34.1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.31.7-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.31.7-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.31.7-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.31.7-1~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"]},{"source":"osv","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.31.0"},{"fixed":"1.31.7"}]}],"versions":["1.31.0","1.31.1","1.31.2","1.31.3","1.31.4","1.31.5","1.31.6"]},{"source":"osv","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.33.0"},{"fixed":"1.33.3"}]}],"versions":["1.33.0","1.33.1","1.33.2"]},{"source":"osv","ecosystem":"Packagist","package":"mediawiki/core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.34.0"},{"fixed":"1.34.1"}]}],"versions":["1.34.0"]},{"source":"osv","ecosystem":"Mageia:7","package":"mediawiki","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.31.7-1.mga7"}]}]},{"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"]}],"products":[{"vendor":"mediawiki","product":"mediawiki"}],"references":[{"url":"https://phabricator.wikimedia.org/T246602","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Vendor Advisory","web","evidence","report"]},{"url":"https://lists.wikimedia.org/pipermail/wikitech-l/2020-March/093243.html","tags":["x_refsource_CONFIRM","x_transferred","Mailing List","Patch","Vendor Advisory","web","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-10960","tags":["web","advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-10960.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-pfm2-mqwj-ggm5"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-10960","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2020-0167.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=26443","tags":["report"]},{"url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-March/000247.html","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2020-10960","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-10960","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-10960","description":"In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).","status":"published","published":"2020-04-03T14:13:52Z","modified":"2024-08-04T11:21:14.164Z","updated_at":"2026-11-02T14:35:48.213211Z"}],"euvd":[{"id":"EUVD-2022-4752","description":"In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).","status":"published","published":"2020-04-03T14:13:52Z","modified":"2024-08-04T11:21:14Z","updated_at":"2026-11-03T03:07:47.591202Z"}],"ghsa":[{"id":"GHSA-pfm2-mqwj-ggm5","title":"MediaWiki makeCollapsible allows applying event handler to any CSS selector","description":"In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).","status":"published","published":"2022-05-24T17:13:21Z","modified":"2024-04-01T19:54:54Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-74","CWE-116"],"updated_at":"2026-11-02T14:37:42.744468Z"}],"nvd":[{"id":"CVE-2020-10960","description":"In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).","status":"published","published":"2020-04-03T15:15:14.497Z","modified":"2026-06-17T02:48:45.27Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:05:57.678762Z"}],"osv":[{"id":"CVE-2020-10960","description":"In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).","status":"published","published":"2020-04-03T15:15:14.497Z","modified":"2026-10-24T10:31:00.115328696Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:13.492058Z"},{"id":"DEBIAN-CVE-2020-10960","description":"In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).","status":"published","published":"2020-04-03T15:15:14.497Z","modified":"2026-10-26T12:00:17.95565592Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:32.862554Z"},{"id":"GHSA-pfm2-mqwj-ggm5","title":"MediaWiki makeCollapsible allows applying event handler to any CSS selector","description":"In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).","status":"published","published":"2022-05-24T17:13:21Z","modified":"2024-04-01T20:11:58.751725Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-116","CWE-74"],"updated_at":"2026-11-02T15:46:53.244788Z"},{"id":"UBUNTU-CVE-2020-10960","description":"In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).","status":"published","published":"2020-04-03T15:15:00Z","modified":"2025-10-24T04:48:24Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:22.212782Z"},{"id":"BIT-mediawiki-2020-10960","description":"In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).","status":"published","published":"2024-03-06T11:14:07.049Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"},{"id":"DSA-4651-1","title":"mediawiki - security update","status":"published","published":"2020-04-02T00:00:00Z","modified":"2026-03-09T02:11:21.400908Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"MGASA-2020-0167","title":"Updated mediawiki packages fix security vulnerability","description":"Updated mediawiki packages fix security vulnerability:\n\nIn MediaWiki before 1.31.7, users can add various Cascading Style Sheets\n(CSS) classes (which can affect what content is shown or hidden in the\nuser interface) to arbitrary DOM nodes via HTML content within a MediaWiki\npage. This occurs because jquery.makeCollapsible allows applying an event\nhandler to any Cascading Style Sheets (CSS) selector. There is no known way\nto exploit this for cross-site scripting (XSS) (CVE-2020-10960).\n","status":"published","published":"2020-04-15T10:12:14Z","modified":"2026-04-16T04:44:26.798726409Z","updated_at":"2026-11-02T15:49:41.151324Z"}]}}