cvedb.io
CVE-2026-6322
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-05-05T11:16:33.360 · Last modified 2026-07-03T13:17:31.270

Summary

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.

Affected products

openjsf — fast-uri

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.