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fast-uri vulnerable to host confusion via failed IDN canonicalization

🗓️ 21 Jul 2026 19:03:11Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 4 Views

Fast-uri versions 2.3.1–4.0.0 fail to canonicalize IDN hosts, causing host confusion and policy desync.

Related
Detection
Refs
Vulners
Node
OR
openjsffast-uriRange2.3.12.4.2npm
openjsffast-uriRange3.0.03.1.3npm
openjsffast-uriRange4.0.04.0.1npm

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21 Jul 2026 19:03Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.17.5
EPSS0.00369
SSVC
4