{"id":"CVE-2020-25827","aliases":["BIT-mediawiki-2020-25827","GHSA-rqvj-fc2x-99q6"],"url":"https://o3.security/vulnerability/CVE-2020-25827","summary":"OATHAuth extension in MediaWiki is not implementing rate limit","details":"An issue was discovered in the OATHAuth extension in MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4. For Wikis using OATHAuth on a farm/cluster (such as via CentralAuth), rate limiting of OATH tokens is only done on a single site level. Thus, multiple requests can be made across many wikis/sites concurrently.","published":"2020-09-27T21:15:12.813Z","modified":"2026-07-08T05:53:49.844575891Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":{"score":0.01752,"percentile":0.75835,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.31.9"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.34.3"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/"},{"type":"ADVISORY","url":"https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html"},{"type":"ADVISORY","url":"https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html"},{"type":"EVIDENCE","url":"https://phabricator.wikimedia.org/T251661"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:53:49.844575891Z"}}