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

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00047.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Mediawiki
  • Mediawiki
Wikimedia
  • Mediawiki-wikibase Extension

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Mediawiki
  • Mediawiki
Wikimedia
  • Mediawiki-wikibase Extension
References
Link Providers
https://gerrit.wikimedia.org/r/q/I39d0074b2ad022b6efe6ab3dd8c8ec0f86c6c466 cve-icon cve-icon
https://phabricator.wikimedia.org/T409737 cve-icon cve-icon cve-icon
History

Fri, 09 Jan 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 09 Jan 2026 13:30:00 +0000

Type Values Removed Values Added
First Time appeared Mediawiki
Mediawiki mediawiki
Wikimedia
Wikimedia mediawiki-wikibase Extension
Vendors & Products Mediawiki
Mediawiki mediawiki
Wikimedia
Wikimedia mediawiki-wikibase Extension

Fri, 09 Jan 2026 00:00:00 +0000

Type Values Removed Values Added
Description Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - Wikibase Extension: 1.45, 1.44, 1.43, 1.39.
Title Stored XSS through autocomment system messages in Wikibase
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

Updated: 2026-01-09T19:16:54.193Z

Reserved: 2026-01-08T23:23:42.385Z

Link: CVE-2026-22710

cve-icon Vulnrichment

Updated: 2026-01-09T19:16:51.483Z

cve-icon NVD

Status : Received

Published: 2026-01-09T00:15:45.693

Modified: 2026-01-09T20:15:52.687

Link: CVE-2026-22710

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-09T13:24:06Z