CVE-2026-34091
Received
Received - Intake
Exposure of Sensitive Information in MediaWiki
Publication date: 2026-05-11
Last updated on: 2026-05-11
Assigner: wikimedia-foundation
Description
Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki.
This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| wikimedia | mediawiki | From 1.43.7 (exc) to 1.45.2 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-200 | The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an Exposure of Sensitive Information to an Unauthorized Actor in Wikimedia Foundation MediaWiki. It affects versions before 1.43.7, 1.44.4, and 1.45.2. Essentially, it allows unauthorized users to access sensitive information that should be protected.
How can this vulnerability impact me? :
The impact of this vulnerability is that sensitive information may be exposed to unauthorized actors. This can lead to information leakage, which might compromise privacy, security, or confidentiality of data managed or stored by MediaWiki.
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