CVE-2026-0671

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-0671
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.

6.1 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://gerrit.wikimedia.org/r/q/I16de2211594ea9a686868ad7789f9879bf981fa1 Patch
https://phabricator.wikimedia.org/T407157 Exploit Issue Tracking Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.39:*:*:*:*:*:*:*
cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.43:*:*:*:*:*:*:*
cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.44:*:*:*:*:*:*:*
cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.45:*:*:*:*:*:*:*
History

15 Jan 2026, 21:50

Type Values Removed Values Added
CPE cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.43:*:*:*:*:*:*:*
cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.39:*:*:*:*:*:*:*
cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.45:*:*:*:*:*:*:*
cpe:2.3:a:wikimedia:mediawiki-extensions-uploadwizard:1.44:*:*:*:*:*:*:*
First Time Wikimedia mediawiki-extensions-uploadwizard
Wikimedia
References () https://gerrit.wikimedia.org/r/q/I16de2211594ea9a686868ad7789f9879bf981fa1 - () https://gerrit.wikimedia.org/r/q/I16de2211594ea9a686868ad7789f9879bf981fa1 - Patch
References () https://phabricator.wikimedia.org/T407157 - () https://phabricator.wikimedia.org/T407157 - Exploit, Issue Tracking, Vendor Advisory

08 Jan 2026, 21:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.1

08 Jan 2026, 17:15

Type Values Removed Values Added
New CVE
Information

Published : 2026-01-08 17:15

Updated : 2026-01-15 21:50

NVD link : CVE-2026-0671

Mitre link : CVE-2026-0671

CVE.ORG link : CVE-2026-0671

JSON object : View

Products Affected

wikimedia

  • mediawiki-extensions-uploadwizard
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')