CVE-2025-6590CWE-200

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

Medium · published February 2, 2026

CVSS v4.0
4.6
EPSS
0%
Percentile
29.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
4.6 · MEDIUM
Vector
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
EPSS
0.00369 · 29.6th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-02-02T23:03Z
EPSS history
Timeline
  • 02 FEB 23:03Z
    Complete content leak of private wikis due to PasswordReset Wikitext injection in error message
    cvelistv5