CVE-2026-0671 — MEDIUM (6.1)

Vulnerability 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.

CVSS Score

6.1

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Wikimedia	Mediawiki-Extensions-Uploadwizard	1.39

Related Weaknesses (CWE)

CWE-79

References

https://gerrit.wikimedia.org/r/q/I16de2211594ea9a686868ad7789f9879bf981fa1Patch
https://phabricator.wikimedia.org/T407157ExploitIssue TrackingVendor Advisory

FAQ

What is CVE-2026-0671?

CVE-2026-0671 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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).T...

How severe is CVE-2026-0671?

CVE-2026-0671 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-0671?

Check the references section above for vendor advisories and patch information. Affected products include: Wikimedia Mediawiki-Extensions-Uploadwizard.