CVSS Score of 10 (low)


Published Jun 30, 2023
Updated: Jul 6, 2023


CVE-2023-37300 is a vulnerability discovered in the CheckUserLog API in the CheckUser extension for MediaWiki through version 1.39.3. This vulnerability results in incorrect access control for visibility of hidden users. The affected products include multiple versions of Xz2hff, Xz2hfe, Xz2hf_, and others. To remediate the vulnerability, it is recommended to upgrade MediaWiki to version 1.39.4 or later. The potential danger this vulnerability poses to an organization is considered medium, with a base severity score of 5.3 out of 10, indicating low confidentiality impact and no integrity or availability impact.


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