CVE-2026-34091
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Mediawiki
PublishedMay 11, 2026
First seenMay 11, 2026
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- mediawiki mediawiki1.43.7, 1.44.4, 1.45.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mediawiki mediawiki | v < 1.43.7, 1.44.0 ≤ v < 1.44.4, 1.45.0 ≤ v < 1.45.2 | 1.43.7, 1.44.4, 1.45.2 |
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