{"schemaVersion":3,"id":"MGASA-2021-0477","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated mediawiki packages fix security vulnerability\n\nXSS vulnerability in Special:Search. (CVE-2021-41798)\nApiQueryBacklinks can cause a full table scan. (CVE-2021-41799)\nFix PoolCounter protection of Special:Contributions. (CVE-2021-41800)\nReplaceText continues performing actions if the user no longer has the\ncorrect permission (such as by being blocked). (CVE-2021-41801)","dates":{"published":"2021-10-13T19:39:52.000Z","modified":"2026-04-16T04:40:38.346Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"mageia","product":"mediawiki","name":"mediawiki","label":"mediawiki","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/mediawiki","purlType":"rpm","versions":[{"text":"< 1.35.4-1.mga8","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.35.4-1.mga8","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2021-0477.html","label":"advisories.mageia.org/MGASA-2021-0477.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=29531","label":"bugs.mageia.org/show_bug.cgi?id=29531","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://www.debian.org/security/2021/dsa-4979","label":"www.debian.org/security/2021/dsa-4979","hostname":"www.debian.org","tags":["WEB"]},{"url":"https://lists.wikimedia.org/hyperkitty/list/mediawiki-announce@lists.wikimedia.org/thread/2IFS5CM2YV4VMSODPX3J2LFHKSEWVFV5/","label":"lists.wikimedia.org/hyperkitty/…","hostname":"lists.wikimedia.org","tags":["WEB"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/QNEAI2T3Y65I55ZB6UE6RMC662RZTGRX/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]}],"lineage":{"upstream":["CVE-2021-41798","CVE-2021-41799","CVE-2021-41800","CVE-2021-41801"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-10-13T19:39:52.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-16T04:40:38.346Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T20:15:42.722Z","stale":false,"partial":false}}