All vulnerabilities

Servers and applications

CVE-2020-26121

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…

Severity
High 7.5
Published
27 Sept 2020
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
1.34.4
Sources
NVD

Affected software

SoftwareAffected versions
MediaWikiServers and applications · cpe:a:mediawiki:mediawiki
  • Every version before 1.34.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-26121
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-26121