Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Cross-Site Scripting (XSS).

This issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10.

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Advisories

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Fixes

Solution

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Workaround

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History

Sun, 27 Sep 2026 12:15:00 +0000

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

Sat, 26 Sep 2026 23:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 25 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
Description Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - TemplateSandbox Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - TemplateSandbox Extension: from * before 1.46.1, 1.45.5, 1.43.10.
Title TemplateSandbox can be abused for XSS by asking another user to preview a page with a certain sandbox prefix
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

Updated: 2026-09-26T22:51:18.594Z

Reserved: 2026-09-25T19:28:11.982Z

Link: CVE-2026-100376

cve-icon Vulnrichment

Updated: 2026-09-26T22:48:24.386Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-25T21:17:21.517

Modified: 2026-09-28T16:38:10.183

Link: CVE-2026-100376

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-27T11:43:23Z

Weaknesses