CVE-2026-34092
CWE-200Published: May 11, 2026· Updated: May 14, 2026
Official Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki.
This vulnerability is associated with program files includes/Skin/Skin.Php.
This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
Technical Analysis
CVE-2026-34092 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.
From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (1)
Quick Facts
Related CVEs (CWE-200)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-34092 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts