CVE-2025-6590

MEDIUM

MediaWiki < 1.39.12, 1.42.76 1.43.1, 1.44.0 - Exposure of Sensitive Information in HTMLUserTextField

Title source: llm

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/htmlform/fields/HTMLUserTextField.Php. This issue affects MediaWiki: from * through 1.39.12, 1.42.76 1.43.1, 1.44.0.

References (1)

Core 1

Core References

Issue Tracking

https://phabricator.wikimedia.org/T392746

Scores

CVSS v4 4.6

EPSS 0.0032

EPSS Percentile 24.1%

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-200

Status published

Products (1)

Wikimedia Foundation/MediaWiki < 1.39.12, 1.42.76 1.43.1, 1.44.0

Published Feb 02, 2026

Tracked Since Feb 18, 2026