{"id":"CVE-2021-36128","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-36128","generatedAt":"2026-10-27T19:57:39.369Z","title":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36.","description":"An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. Autoblocks for CentralAuth-issued suppression blocks are not properly implemented.","published":"2021-07-02T13:15:08.000Z","lastModified":"2026-06-17T03:58:23.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-755"],"affected":["mediawiki/mediawiki"],"epss":{"score":0.01498,"percentile":0.74042,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://gerrit.wikimedia.org/r/q/I15d14c88a1e30df92c470bc191c4ee573172d4d1","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://gerrit.wikimedia.org/r/q/I3e65690695313380c798b62edfda726b6e374f89","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://phabricator.wikimedia.org/T281972","tags":["Exploit","Issue Tracking","Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://gerrit.wikimedia.org/r/q/I15d14c88a1e30df92c470bc191c4ee573172d4d1","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gerrit.wikimedia.org/r/q/I3e65690695313380c798b62edfda726b6e374f89","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://phabricator.wikimedia.org/T281972","tags":["Exploit","Issue Tracking","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-36128","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}