PT-2025-28474 · Mediawiki · Mediawiki

Dreamy_Jazz · Published 2025-07-08 · Updated 2025-07-08 · CVE-2025-53480

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Mediawiki - CheckUser extension versions 1.39.0 through 1.39.12 Mediawiki - CheckUser extension versions 1.42.0 through 1.42.6 Mediawiki - CheckUser extension versions 1.43.0 through 1.43.1

Description: The issue is related to the rendering of specific internationalized messages without proper escaping in the Account information tab of the Special:Investigate page. Attackers can exploit this by appending ?uselang=x-xss to the URL, causing reflected XSS when the UI renders affected message keys.

Recommendations: For versions 1.39.0 through 1.39.12, update to version 1.39.13 or later. For versions 1.42.0 through 1.42.6, update to version 1.42.7 or later. For versions 1.43.0 through 1.43.1, update to version 1.43.2 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-53480

Affected Products

Mediawiki

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2025-53480 · Security Note
• https://t.me/cvenotify/128082 · Telegram Post
• https://twitter.com/CVEnew/status/1942604140338622643 · Twitter Post
• https://gerrit.wikimedia.org/r/q/I777fc55fef15c3b00df0db268af2b64cb2d6e381 · Note
• https://phabricator.wikimedia.org/T394700 · Note