Security restrictions bypass in MediaWiki - CVE-2021-41801

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Main Vulnerability Database Vulnerabilities #VU56983

Security restrictions bypass in MediaWiki - CVE-2021-41801

Published: October 1, 2021


Vulnerability identifier: #VU56983
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-41801
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: MediaWiki.org
Affected software:
MediaWiki

Detailed vulnerability description

The vulnerability allows a remote attacker to bypass security checks.

The vulnerability exists due to application does not properly check permissions when executing jobs. A remote user can execute actions, such as global replacement of text in wiki articles even after their permissions have been revoked.


How to mitigate CVE-2021-41801

Install updates from vendor's website.

Sources