{"id":"CVE-2021-36128","aliases":["BIT-mediawiki-2021-36128","EUVD-2021-22760","GHSA-v83p-2pcp-wwg6"],"status":"published","title":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for...","description":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01498,"percentile":0.74441,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287","CWE-755"],"published":"2021-07-02T13:00:45Z","modified":"2026-10-24T10:31:04Z","fixes":[{"ecosystem":"Bitnami","package":"mediawiki","fixed_in":["1.36.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"mediawiki","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.36.1"}]}]}],"products":[{"vendor":"mediawiki","product":"mediawiki"}],"references":[{"url":"https://phabricator.wikimedia.org/T281972","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Vendor Advisory","web","fix"]},{"url":"https://gerrit.wikimedia.org/r/q/I3e65690695313380c798b62edfda726b6e374f89","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","web","fix"]},{"url":"https://gerrit.wikimedia.org/r/q/I15d14c88a1e30df92c470bc191c4ee573172d4d1","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","web","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36128","tags":["web"]},{"url":"https://github.com/advisories/GHSA-v83p-2pcp-wwg6"}],"sources":{"cve":[{"id":"CVE-2021-36128","description":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.","status":"published","published":"2021-07-02T13:00:45Z","modified":"2024-08-04T00:47:43.949Z","updated_at":"2026-11-02T14:33:05.989686Z"}],"euvd":[{"id":"EUVD-2021-22760","description":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.","status":"published","published":"2021-07-02T13:00:45Z","modified":"2024-08-04T00:47:43Z","updated_at":"2026-11-03T03:24:29.877227Z"}],"ghsa":[{"id":"GHSA-v83p-2pcp-wwg6","title":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for...","description":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.","status":"published","published":"2022-05-24T19:06:53Z","modified":"2023-01-27T05:02:52Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:42:06.943612Z"}],"nvd":[{"id":"CVE-2021-36128","description":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.","status":"published","published":"2021-07-02T13:15:07.843Z","modified":"2026-06-17T03:58:23.463Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:06:55.259633Z"}],"osv":[{"id":"CVE-2021-36128","description":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.","status":"published","published":"2021-07-02T13:15:07.843Z","modified":"2026-10-24T10:31:04.392373125Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:20.434873Z"},{"id":"BIT-mediawiki-2021-36128","description":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.","status":"published","published":"2024-03-06T11:11:27.3Z","modified":"2025-04-03T14:40:37.652Z","updated_at":"2026-11-02T15:28:33.072289Z"}]}}