CVE-2026-100243 - Vulnerability Details - OpenCVE

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

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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00155.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

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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/Iff6ef320017649750e5c6723a91ee298eb97a408
https://phabricator.wikimedia.org/T430896

History

Wed, 30 Sep 2026 21:30:00 +0000

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 29 Sep 2026 17:00:00 +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 - WikiSEO Extension allows Stored XSS. This issue affects Mediawiki - WikiSEO Extension: from * before 1.46.1, 1.45.5, 1.43.10.
Title		Stored XSS in WikiSEO author and image properties on action=info
Weaknesses		CWE-79
References		https://gerrit.wikimedia.org/r/q/Iff6ef320017649750e5c6723a91ee298eb97a408 https://phabricator.wikimedia.org/T430896

Projects

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MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published: 2026-09-29T16:43:00.209Z

Updated: 2026-09-30T20:45:04.917Z

Reserved: 2026-09-25T16:03:13.124Z

Link: CVE-2026-100243

Vulnrichment

Updated: 2026-09-30T20:44:56.885Z

NVD

Status : Awaiting Analysis

Published: 2026-09-29T17:17:01.340

Modified: 2026-09-30T21:16:53.297

Link: CVE-2026-100243

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-10-01T01:00:10Z

Weaknesses

CWE-79

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