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CVE-2026-6322 Detail

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 <= 3.1.1 are affected. Update to 3.1.2 or later.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://cna.openjsf.org/security-advisories.html openjs
https://github.com/fastify/fast-uri/security/advisories/GHSA-v39h-62p7-jpjc openjs

Weakness Enumeration

CWE-ID CWE Name Source
CWE-436 Interpretation Conflict openjs  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-6322
NVD Published Date:
05/05/2026
NVD Last Modified:
05/07/2026
Source:
openjs