CVE-2021-44858

HIGH

MediaWiki < 1.35.5, 1.36.x < 1.36.3, 1.37.x < 1.37.1 - Unauthenticated Private Page Access via Undo and Restore Actions

Title source: llm
STIX 2.1

Description

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.

References (3)

Core 3
Core References
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202305-24

Scores

CVSS v3 7.5
EPSS 0.0039
EPSS Percentile 60.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-276
Status published
Products (1)
mediawiki/mediawiki < 1.35.5
Published Dec 20, 2021
Tracked Since Feb 18, 2026