PT-2026-1967 · Mediawiki · Mediawiki+1

A_Smart_Kitten · Published 2026-01-08 · Updated 2026-01-09 · CVE-2026-0671

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions MediaWiki - UploadWizard extension versions 1.39 through 1.45

Description The MediaWiki - UploadWizard extension contains a flaw related to improper input neutralization during web page generation, which could allow for Cross-Site Scripting (XSS). This issue may allow an attacker to inject malicious scripts into web pages viewed by other users. The affected component is the UploadWizard extension.

Recommendations Update to a version later than 1.45.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-0671

Affected Products

Mediawiki

Uploadwizard

References · 6

• https://phabricator.wikimedia.org/T407157 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-0671 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-0671 · Security Note
• https://gerrit.wikimedia.org/r/q/I16de2211594ea9a686868ad7789f9879bf981fa1 · Patch
• https://twitter.com/CVEnew/status/2009462353675604404 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2009352188691140760 · Twitter Post