UpHeron
All vulnerabilities

Servers and applications

CVE-2021-44858

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. It is possible to use action=edit&undo= followed by action=mcrundo and action=mcrrestore to view private pages on a private wiki that has at least one page set in $wgWhitelistRead.

Severity
High 7.5
Published
20 Dec 2021
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
1.35.5, 1.36.3, 1.37.1
Sources
NVD

Affected software

SoftwareAffected versions
MediaWikiServers and applications · cpe:a:mediawiki:mediawiki
  • Every version before 1.35.5
  • From 1.36.0 before 1.36.3
  • From 1.37.0 before 1.37.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-44858
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-44858