CVE-2026-39937

HIGH EPSS 17.6%

Published Apr 7, 20262mo ago · Modified Jun 17, 20261w ago

8.8 CVSS 4.0

High

Published Apr 7, 2026 2mo ago

Last Modified Jun 17, 2026 1w ago

Description

Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure. The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.

CVSS Details

Base Score

8.8

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/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:X/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

17.6% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-212

References 2

gerrit.wikimedia.org https://gerrit.wikimedia.org/r/q/I0b72427fa329aee85841a2cb23dec3058edce85e
phabricator.wikimedia.org https://phabricator.wikimedia.org/T418122

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.