All vulnerabilities

Servers and applications

CVE-2020-27621

The FileImporter extension in MediaWiki through 1.35.0 was not properly attributing various user actions to a specific user's IP address. Instead, for various actions, it would report the IP address of an internal Wikimedia Foundation server by omitting X-Forwarded-For data. This resulted in an inability to properly audit and attribute various user actions performed via the FileImporter extension.

Severity
Medium 4.3
Published
22 Oct 2020
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
MediaWikiServers and applications · cpe:a:mediawiki:mediawiki
  • Every version up to 1.35.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-27621
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-27621