Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Collection (Book) extension allows XSS Targeting Non-Script Elements.

This issue affects MediaWiki Collection (Book) extension: 1.46, 1.45, and 1.43.

Attack Vector Network

Attack Complexity High

Privileges Required Low

Attack Requirements Present

User Interaction Active

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

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.

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

Vendor Product Default status Versions
The Wikimedia Foundation MediaWiki Collection (Book) extension unaffected
Version Status Constraints
1.46 affected —
1.45 affected —
1.43 affected —

No data.

No data.

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No data.

Project Subscriptions

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/I51d973d4ace99fb6e584296f296efb0ff50339ce cve-icon cve-icon
https://phabricator.wikimedia.org/T435822 cve-icon cve-icon
History

Wed, 30 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Collection (Book) extension allows XSS Targeting Non-Script Elements. This issue affects MediaWiki Collection (Book) extension: 1.46, 1.45, and 1.43.
Title API permits session-seeded javascript URL XSS
Weaknesses CWE-80
References
Metrics cvssV4_0

{'score': 1.1, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

Updated: 2026-09-30T16:19:16.720Z

Reserved: 2026-09-30T15:41:01.270Z

Link: CVE-2026-103443

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-30T17:16:43.030

Modified: 2026-09-30T17:31:44.573

Link: CVE-2026-103443

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-30T17:30:19Z

Weaknesses