🛡️ CVE-2021-36126 — mediawiki
Description
An issue was discovered in the AbuseFilter extension in MediaWiki through 1.36. If the MediaWiki:Abusefilter-blocker message is invalid within the content language, the filter user falls back to the English version, but that English version could also be invalid on a wiki. This would result in a fatal error, and potentially fail to block or restrict a potentially nefarious user.
Affected software
CVE-2021-36126 is recorded against 1 package.
- mediawiki
Timeline and source
Published on 6 March 2024 and last revised on 3 April 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
gerrit.wikimedia.org (Web)
phabricator.wikimedia.org (Web)
nvd.nist.gov (Web)
Details
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| mediawiki | — | — |
References
Similar Threats
- Critical CVE-2020-10534
- High CVE-2020-25869
- Medium CVE-2020-26120
- Medium CVE-2020-27621
- Medium CVE-2020-27957
More CVE 2021 advisories
Browse all of CVE 2021 in the advisory index.
Exploit Protection
Are you running mediawiki?
CVE-2021-36126 carries CVSS 9.5 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.
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