CVE-2026-103443

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.

References

• https://gerrit.wikimedia.org/r/q/I51d973d4ace99fb6e584296f296efb0ff50339ce
• https://phabricator.wikimedia.org/T435822