CVE-2026-34091

MEDIUM EPSS 20.7%

Published May 11, 20261mo ago · Modified Jun 17, 20261w ago

5.5 CVSS 4.0

Medium

Published May 11, 2026 1mo ago

Last Modified Jun 17, 2026 1w ago

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 Details

Base Score

5.5

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

20.7% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure

Affected Products 3

Vendor	Product	Version	Range
mediawiki	mediawiki	*	<1.43.7
mediawiki	mediawiki	*	≥1.44.0 – <1.44.4
mediawiki	mediawiki	*	≥1.45.0 – <1.45.2

References 1

phabricator.wikimedia.org https://phabricator.wikimedia.org/T411305

Issue TrackingVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.