CSRF in MediaWiki
CVE-2024-34502
An issue was discovered in WikibaseLexeme in MediaWiki before 1.39.6, 1.40.x before 1.40.2, and 1.41.x before 1.41.1. Loading Special:MergeLexemes will (attempt to) make an edit that merges the from-id to the to-id, even if the request was not a POST request, and even if it does not contain an edit token.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (32.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- MediaWiki
- Fedoraproject Fedora — versions 40
Weakness classification (CWE)
References
- phabricator.wikimedia.org/T357101 (Issue Tracking, Vendor Advisory)
- gerrit.wikimedia.org/r/c/mediawiki/extensions/WikibaseLexeme/+/1013359 (Patch, Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2024-34502?
- CVE-2024-34502 is a critical-severity vulnerability in MediaWiki, classified under Cross-Site Request Forgery (CSRF). CVSS score: 9.8/10. Published 2024-05-05.
- How severe is CVE-2024-34502?
- Critical severity. CVSS v3 base score is 9.8 out of 10.