CVSS 3.1 Score 4.3 of 10 (medium)


Published Jul 7, 2024
Updated: Jul 9, 2024
CWE ID 532


CVE-2024-40596 is a vulnerability that affects the CheckUser extension for MediaWiki versions up to 1.42.1. The vulnerability allows the Special:Investigate feature to expose suppressed information for log events, due to the lack of proper support in TimelineService for suppressing information. To remediate this vulnerability, users should update their MediaWiki installation to version 1.42.1 or later. This vulnerability poses a potential danger to organizations using MediaWiki as it could lead to the exposure of sensitive information contained in suppressed log events, compromising confidentiality. The severity of this vulnerability is rated as MEDIUM with a base score of 4.3 according to NIST's National Vulnerability Database (NVD).

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