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CVE-2025-6590

Complete content leak of private wikis due to PasswordReset Wikitext injection in error message

Published: Feb 2, 2026Updated: Feb 3, 2026 Sources: CVE List NVD BDUCWE-200
NVD MITRE
5.4CVSSMEDIUM
EPSS Score
0.3%
Top 76.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LC:LI:LA:N
Exploitability
AV:NAccess Vector
Network
AC:LAccess Complexity
Low
Impact
C:LConfidentiality
L
I:LIntegrity
L
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-200

Affected Products

MediaWikiWikimedia Foundation
On-premCMS Plugin
Web & CMS Plugins / cms-core
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
MediaWikiСообщество свободного программного обеспечения
On-premWeb App
Web & CMS Plugins / cms-core
wikimedia foundationoss-projectUSWeb & CMS Pluginsaka wikimedia
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «ред софт»commercialRUOperating Systemsaka red soft

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://phabricator.wikimedia.org/T392746
phabricator.wikimedia.org
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1165084
gerrit.wikimedia.org
https://phabricator.wikimedia.org/T392746
phabricator.wikimedia.org
and 3 more references View all →

Timeline

Published
Feb 2, 2026
Last Updated
Feb 3, 2026

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