Unauthorized Access Vulnerability in MediaWiki by Wikimedia
CVE-2021-44858

7.5HIGH

Key Information:

Vendor

Mediawiki
Status
Mediawiki
Vendor
CVE Published:
20 December 2021

What is CVE-2021-44858?

A vulnerability in MediaWiki enables unauthorized users to access private pages on a wiki that employs the $wgWhitelistRead setting. By exploiting the actions 'edit&undo', 'mcrundo', and 'mcrrestore', individuals can view restricted content if the configuration is not properly secured. This issue was noted in versions prior to 1.35.5, 1.36.3, and 1.37.1, highlighting the need for immediate updates to bolster security defenses.

References

https://phabricator.wikimedia.org/T297322
https://www.mediawiki.org/wiki/2021-12_security_release/FAQ
https://security.gentoo.org/glsa/202305-24
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.