CVE-2021-44858

—

CVSS 3.1

7.5 high

EPSS

1%p69

Published

Dec 20, 2021 (Dec 20, 2021)

Modified

Jun 17, 2026

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.

Vendors: mediawiki
Products: mediawiki
Weakness: CWE-276
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (1.3%)

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