CVE-2025-6590 | BDVDB-2026-313228 Detail

Wikimedia FoundationMediaWiki

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.

Impact#

Per CVSS v4.0: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References#

https://phabricator.wikimedia.org/T392746

Exploit#

No public exploit known

History#

Version 12026-02-02Record published in the CVE List.
Version 22026-02-03Most recent update recorded in the CVE List.

Published

Published: 2026-02-02
Last modified: 2026-02-03

Vendor information

Vendor: Wikimedia Foundation
Product: MediaWiki

All Wikimedia Foundation vulnerabilities

Score

4.6 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 30.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Information Disclosure

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
<= 1.39.12, 1.42.76 1.43.1, 1.44.0
Fixed
Not stated

Scoring System

CVSS v4.0

4.6 Medium

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

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Attack Requirements	Present
Privileges Required	None
User Interaction	Active
Vulnerable System Confidentiality	Low
Vulnerable System Integrity	None
Vulnerable System Availability	None
Subsequent System Confidentiality	High
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).