Improper access control in MediaWiki - CVE-2021-41800

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Main Vulnerability Database Vulnerabilities #VU56982

Improper access control in MediaWiki - CVE-2021-41800

Published: October 1, 2021


Vulnerability identifier: #VU56982
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-41800
CWE-ID: CWE-284
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 gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions, related to PoolCounter and Special:Contributions section. A remote attacker can bypass implemented security restrictions and gain unauthorized access to the application.


How to mitigate CVE-2021-41800

Install updates from vendor's website.

Sources