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

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Wikimedia Foundation Mediawiki - WikiSEO Extension unaffected
Version Status Constraints
* affected < 1.46.1, 1.45.5, 1.43.10

No data.

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Project Subscriptions

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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 cve-icon cve-icon
https://phabricator.wikimedia.org/T430896 cve-icon cve-icon
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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

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

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

Link: CVE-2026-100243

cve-icon Vulnrichment

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

cve-icon NVD

Status : Awaiting Analysis

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

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

Link: CVE-2026-100243

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses