CVE-2026-0671

MEDIUM

MediaWiki UploadWizard extension 1.39, 1.43-1.45 - Cross-Site Scripting

Title source: llm

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki - UploadWizard extension allows Cross-Site Scripting (XSS).This issue affects MediaWiki - UploadWizard extension: 1.45, 1.44, 1.43, 1.39.

References (2)

Core 2

Core References

Patch

https://gerrit.wikimedia.org/r/q/I16de2211594ea9a686868ad7789f9879bf981fa1

Exploit, Issue Tracking, Vendor Advisory

https://phabricator.wikimedia.org/T407157

Scores

CVSS v3 6.1

EPSS 0.0020

EPSS Percentile 10.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (4)

wikimedia/mediawiki-extensions-uploadwizard 1.39

wikimedia/mediawiki-extensions-uploadwizard 1.43

wikimedia/mediawiki-extensions-uploadwizard 1.44

wikimedia/mediawiki-extensions-uploadwizard 1.45

Published Jan 08, 2026

Tracked Since Feb 18, 2026