{"id":"CVE-2020-27957","aliases":["BIT-mediawiki-2020-27957","EUVD-2020-20449","GHSA-rpm7-qhmh-9jvh"],"status":"published","title":"The RandomGameUnit extension for MediaWiki through 1.35 was not properly escaping various title...","description":"The RandomGameUnit extension for MediaWiki through 1.35 was not properly escaping various title-related data. When certain varieties of games were created within MediaWiki, their names or titles could be manipulated to generate stored XSS within the RandomGameUnit extension.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00691,"percentile":0.53151,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2020-10-28T02:29:54Z","modified":"2026-10-24T10:30:43Z","fixes":[{"ecosystem":"Bitnami","package":"mediawiki","fixed_in":["1.35.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"mediawiki","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.35.1"}]}]}],"products":[{"vendor":"mediawiki","product":"mediawiki"}],"references":[{"url":"https://phabricator.wikimedia.org/T266400","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory","web","evidence"]},{"url":"https://gerrit.wikimedia.org/r/q/I497d2076038f75c9eb77e0e250f2af56f5bd2bfc","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","web","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27957","tags":["web"]},{"url":"https://github.com/advisories/GHSA-rpm7-qhmh-9jvh"}],"sources":{"cve":[{"id":"CVE-2020-27957","description":"The RandomGameUnit extension for MediaWiki through 1.35 was not properly escaping various title-related data. When certain varieties of games were created within MediaWiki, their names or titles could be manipulated to generate stored XSS within the RandomGameUnit extension.","status":"published","published":"2020-10-28T02:29:54Z","modified":"2024-08-04T16:25:44.109Z","updated_at":"2026-11-02T14:35:53.236501Z"}],"euvd":[{"id":"EUVD-2020-20449","description":"The RandomGameUnit extension for MediaWiki through 1.35 was not properly escaping various title-related data. When certain varieties of games were created within MediaWiki, their names or titles could be manipulated to generate stored XSS within the RandomGameUnit extension.","status":"published","published":"2020-10-28T02:29:54Z","modified":"2024-08-04T16:25:44Z","updated_at":"2026-11-03T03:07:10.69897Z"}],"ghsa":[{"id":"GHSA-rpm7-qhmh-9jvh","title":"The RandomGameUnit extension for MediaWiki through 1.35 was not properly escaping various title...","description":"The RandomGameUnit extension for MediaWiki through 1.35 was not properly escaping various title-related data. When certain varieties of games were created within MediaWiki, their names or titles could be manipulated to generate stored XSS within the RandomGameUnit extension.","status":"published","published":"2022-05-24T17:32:38Z","modified":"2023-01-29T05:04:19Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:45:31.69314Z"}],"nvd":[{"id":"CVE-2020-27957","description":"The RandomGameUnit extension for MediaWiki through 1.35 was not properly escaping various title-related data. When certain varieties of games were created within MediaWiki, their names or titles could be manipulated to generate stored XSS within the RandomGameUnit extension.","status":"published","published":"2020-10-28T03:15:12.647Z","modified":"2026-06-17T03:09:56.41Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:21.80969Z"}],"osv":[{"id":"CVE-2020-27957","description":"The RandomGameUnit extension for MediaWiki through 1.35 was not properly escaping various title-related data. When certain varieties of games were created within MediaWiki, their names or titles could be manipulated to generate stored XSS within the RandomGameUnit extension.","status":"published","published":"2020-10-28T03:15:12.647Z","modified":"2026-10-24T10:30:43.656340577Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:16.248747Z"},{"id":"BIT-mediawiki-2020-27957","description":"The RandomGameUnit extension for MediaWiki through 1.35 was not properly escaping various title-related data. When certain varieties of games were created within MediaWiki, their names or titles could be manipulated to generate stored XSS within the RandomGameUnit extension.","status":"published","published":"2024-03-06T11:13:45.361Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"}]}}