🛡️ CVE-2020-26121 — mediawiki
Description
An issue was discovered in the FileImporter extension for MediaWiki before 1.34.4. An attacker can import a file even when the target page is protected against "page creation" and the attacker should not be able to create it. This occurs because of a mishandled distinction between an upload restriction and a create restriction. An attacker cannot leverage this to overwrite anything, but can leverage this to force a wiki to have a page with a disallowed title.
Affected software
CVE-2020-26121 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
commons.wikimedia.org (Web)
gerrit.wikimedia.org (Web)
lists.fedoraproject.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 2020 advisories
Browse all of CVE 2020 in the advisory index.
Site Security Check
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CVE-2020-26121 is rated CVSS 8.0 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.
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