CVE-2026-6322
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
05/05/2026
Last modified:
05/05/2026
Description
fast-uri normalize() decoded percent-encoded authority delimiters inside the host component and then re-emitted them as raw delimiters during serialization. A host that combined an allowed domain, an encoded at-sign, and a different domain was re-emitted with the at-sign as a raw userinfo separator, changing the URI's authority to the second domain. Applications that normalize untrusted URLs before host allowlist checks, redirect validation, or outbound request routing can be steered to a different authority than the input appeared to specify. Versions
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH