CVE-2026-100380 - Vulnerability Details - OpenCVE

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

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

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.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

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.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://gerrit.wikimedia.org/r/q/I7407f9748d72161ce25ad0ba2446869bb1776857
https://phabricator.wikimedia.org/T434549

History

Fri, 25 Sep 2026 21:15:00 +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 - Wikibase Extension allows Cross-Site Scripting (XSS). This issue affects Mediawiki - Wikibase Extension: from * before 1.46.1, 1.45.5, 1.43.10.
Title		Reflected XSS in Wikibase Special:SetLabel language validation
Weaknesses		CWE-79
References		https://gerrit.wikimedia.org/r/q/I7407f9748d72161ce25ad0ba2446869bb1776857 https://phabricator.wikimedia.org/T434549
Metrics		cvssV4_0 `{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published: 2026-09-25T20:58:24.004Z

Updated: 2026-09-25T20:58:24.004Z

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

Link: CVE-2026-100380

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-25T21:17:22.037

Modified: 2026-09-25T21:17:22.037

Link: CVE-2026-100380

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-26T00:00:07Z

Weaknesses

CWE-79

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