CVE-2026-0671

MEDIUM EPSS 10.2%

Published Jan 8, 20265mo ago · Modified Jun 17, 20261w ago

6.1 CVSS 3.1

Medium

Published Jan 8, 2026 5mo ago

Last Modified Jun 17, 2026 1w ago

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 Details

Base Score

6.1

Exploitability

2.8

Impact

2.7

Vector string

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

Threat Intelligence

EPSS Exploit Probability

10.2% percentile

Exploit & Patch Status

Public Exploit Known

Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 4

Vendor	Product	Version	Range
wikimedia	mediawiki-extensions-uploadwizard	1.39	any
wikimedia	mediawiki-extensions-uploadwizard	1.43	any
wikimedia	mediawiki-extensions-uploadwizard	1.44	any
wikimedia	mediawiki-extensions-uploadwizard	1.45	any

References 2

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

Patch
phabricator.wikimedia.org https://phabricator.wikimedia.org/T407157

ExploitIssue TrackingVendor Advisory

Remediation

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

Patch