Information disclosure in MediaWiki - CVE-2021-31549

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Main Vulnerability Database Vulnerabilities #VU52573

Information disclosure in MediaWiki - CVE-2021-31549

Published: April 26, 2021


Vulnerability identifier: #VU52573
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-31549
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
MediaWiki
Software vendor:
MediaWiki.org

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the AbuseFilter extension. A remote authenticated attacker can use the Special:AbuseFilter/examine form to disclose the suppressed MediaWiki usernames.


Remediation

Install updates from vendor's website.

External links