CVE-2026-103443

Published Sep 30, 2026 Modified Sep 30, 2026 CWE-80

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.

Is your site exposed to CVE-2026-103443?

Run a free security scan — no signup, results in seconds.

Weakness Type (CWE)

CWE-80 CWE-80

References

Frequently Asked Questions

What is CVE-2026-103443? +
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.
How do I check if I'm vulnerable to CVE-2026-103443? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2026-103443 — free, no signup required.