Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-31553

An issue was discovered in the CheckUser extension for MediaWiki through 1.35.2. MediaWiki usernames with trailing whitespace could be stored in the cu_log database table such that denial of service occurred for certain CheckUser extension pages and functionality. For example, the attacker could turn off Special:CheckUserLog and thus interfere with usage tracking.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.007
EPSS Ranking 70.2%
CVSS Severity
CVSS v3 Score 6.5
CVSS v2 Score 6.4
References
Products affected by CVE-2021-31553


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