{"id":"CVE-2023-29141","aliases":["BIT-mediawiki-2023-29141","GHSA-5vj8-g3qg-4qh6"],"url":"https://o3.security/vulnerability/CVE-2023-29141","summary":"X-Forwarded-For header allows brute-forcing autoblocked IP addresses","details":"An issue was discovered in MediaWiki before 1.35.10, 1.36.x through 1.38.x before 1.38.6, and 1.39.x before 1.39.3. An auto-block can occur for an untrusted X-Forwarded-For header.","published":"2023-03-31T00:00:00Z","modified":"2026-07-15T01:48:58.253954978Z","cvss":{"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"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.39.3"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.38.6"},{"ecosystem":"Packagist","name":"mediawiki/core","fixedVersion":"1.35.10"}],"fix":null,"references":[{"type":"WEB","url":"https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/REL1_39/RELEASE-NOTES-1.39"},{"type":"WEB","url":"https://phabricator.wikimedia.org/T285159"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29141.json"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ONWHGOBFD6CQAEGOP5O375XAP2N6RUHT/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZGK4NZPIJ5ET2ANRZOUYPCRIB5I64JR7/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-29141"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5447"},{"type":"ARTICLE","url":"https://lists.debian.org/debian-lts-announce/2023/08/msg00029.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:58.253954978Z"}}