CVE-2026-103443

EUVD-2026-90079
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.
Basic XSS
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
1.1 LOW
NETWORK
HIGH
LOW
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 10.05%
Common Weakness Enumeration
References
https://gerrit.wikimedia.org/r/q/I51d973d4ace99fb6e584296f296efb0ff50339ce
https://phabricator.wikimedia.org/T435822