CVE-2026-103443: CWE-80 Improper neutralization of Script-Related HTML tags in a web page (basic XSS) in The Wikimedia Foundation MediaWiki Collection (Book) extension
A low-severity cross-site scripting (XSS) vulnerability exists in the MediaWiki Collection (Book) extension versions 1.43, 1.45, and 1.46. This vulnerability involves improper neutralization of script-related HTML tags, allowing XSS targeting non-script elements on web pages.
AI Analysis
Technical Summary
CVE-2026-103443 is a basic XSS vulnerability in The Wikimedia Foundation's MediaWiki Collection (Book) extension. It arises from improper neutralization of script-related HTML tags in web pages, enabling cross-site scripting attacks targeting non-script elements. The affected versions are 1.43, 1.45, and 1.46. The CVSS 4.0 base score is 1.1, indicating low severity. There is no indication of known exploits in the wild or an available patch from the provided data.
Potential Impact
The vulnerability allows an attacker with low privileges and requiring user interaction to execute cross-site scripting attacks with limited impact. The low CVSS score reflects minimal risk, with low confidentiality, integrity, and availability impact. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor The Wikimedia Foundation's advisories for updates. Until a fix is available, cautious handling of user input and restricting privileges may reduce risk.
CVE-2026-103443: CWE-80 Improper neutralization of Script-Related HTML tags in a web page (basic XSS) in The Wikimedia Foundation MediaWiki Collection (Book) extension
Description
A low-severity cross-site scripting (XSS) vulnerability exists in the MediaWiki Collection (Book) extension versions 1.43, 1.45, and 1.46. This vulnerability involves improper neutralization of script-related HTML tags, allowing XSS targeting non-script elements on web pages.
CVSS v4.0
Score 1.1low
Affected software
The Wikimedia Foundation
MediaWiki Collection (Book) extension
pkg:github/wikimedia/mediawiki-extensions-collectionRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-103443 is a basic XSS vulnerability in The Wikimedia Foundation's MediaWiki Collection (Book) extension. It arises from improper neutralization of script-related HTML tags in web pages, enabling cross-site scripting attacks targeting non-script elements. The affected versions are 1.43, 1.45, and 1.46. The CVSS 4.0 base score is 1.1, indicating low severity. There is no indication of known exploits in the wild or an available patch from the provided data.
Potential Impact
The vulnerability allows an attacker with low privileges and requiring user interaction to execute cross-site scripting attacks with limited impact. The low CVSS score reflects minimal risk, with low confidentiality, integrity, and availability impact. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor The Wikimedia Foundation's advisories for updates. Until a fix is available, cautious handling of user input and restricting privileges may reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- wikimedia-foundation
- Date Reserved
- 2026-09-30T15:41:01.270Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abd3d882a4e24523d41fc7f
Added to database: 09/30/2026, 16:49:12 UTC
Last enriched: 09/30/2026, 17:03:39 UTC
Last updated: 09/30/2026, 17:22:54 UTC
Views: 5
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