CVE-2026-34093
Received Received - Intake
Exposure of Sensitive Information in MediaWiki

Publication date: 2026-05-11

Last updated on: 2026-05-18

Assigner: wikimedia-foundation

Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Specials/SpecialUserRights.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
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Meta Information
Published
2026-05-11
Last Modified
2026-05-18
Generated
2026-06-21
AI Q&A
2026-05-11
EPSS Evaluated
2026-06-19
NVD
CVE-2026-34093
EUVD
EUVD-2026-29107
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
mediawiki mediawiki to 1.43.7 (exc)
mediawiki mediawiki From 1.44.0 (inc) to 1.44.4 (exc)
mediawiki mediawiki From 1.45.0 (inc) to 1.45.2 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
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Executive Summary

This vulnerability is an Exposure of Sensitive Information to an Unauthorized Actor in the Wikimedia Foundation's MediaWiki software. It is related to the program file includes/Specials/SpecialUserRights.Php and affects versions of MediaWiki before 1.43.7, 1.44.4, and 1.45.2.

Impact Analysis

The vulnerability could allow unauthorized actors to access sensitive information within the MediaWiki software, potentially leading to information disclosure that should be restricted.

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