{"id":"CVE-2023-45363","aliases":["BIT-mediawiki-2023-45363","GHSA-w5fx-cx7f-6vr9"],"url":"https://o3.security/vulnerability/CVE-2023-45363","summary":"MediaWiki Denial of Service vulnerability","details":"An issue was discovered in ApiPageSet.php in MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. It allows attackers to cause a denial of service (unbounded loop and RequestTimeoutException) when querying pages redirected to other variants with redirects and converttitles set.","published":"2023-10-09T00:00:00Z","modified":"2026-08-12T03:51:33.518291688Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.22699,"percentile":0.97565,"asOf":"2026-09-04"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.35.12"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.39.5"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.40.1"}],"fix":{"url":"https://github.com/wikimedia/mediawiki/commit/24c3ef2474c6daa20ed48168d46196a55346dfd8","label":"wikimedia/mediawiki@24c3ef2"},"references":[{"type":"WEB","url":"https://phabricator.wikimedia.org/T333050"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45363.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-45363"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5520"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2023/11/msg00027.html"},{"type":"WEB","url":"https://github.com/wikimedia/mediawiki/commit/24c3ef2474c6daa20ed48168d46196a55346dfd8"},{"type":"PACKAGE","url":"https://github.com/wikimedia/mediawiki"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:33.518291688Z"}}