CVE-2025-62663 MEDIUM

CVE-2025-62663: Stored XSS through a system message in UploadWizard

Vendor The Wikimedia Foundation
Product Mediawiki - UploadWizard Extension
Weakness CWE-79 · XSS
Published October 18, 2025
Last update October 20, 2025
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - UploadWizard Extension allows Stored XSS.This issue affects Mediawiki - UploadWizard Extension: from master before 1.39.

Key dates

02Disclosure timeline

October 18, 2025 CVE published
October 20, 2025 Record updated