VYPR
Unrated severityNVD Advisory· Published Apr 22, 2021· Updated Aug 3, 2024

CVE-2021-31553

CVE-2021-31553

Description

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.

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Affected products

3

Patches

Vulnerability mechanics

References

7

News mentions

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