What is CVE-2026-6322?

CVE-2026-6322 is a high-severity vulnerability in Fast-uri, classified under CWE-436. CVSS score: 7.5/10. Published 2026-05-05.

How severe is CVE-2026-6322?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Fast-uri

CVE-2026-6322

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…

EPSS: 0.000 (1.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Fast-uri — versions 0, 3.1.2
Openjsf Fast-uri

Weakness classification (CWE)

CWE-436

References

ce714d77-add3-4f53-aff5-83d477b104bb (Vendor Advisory)
ce714d77-add3-4f53-aff5-83d477b104bb (Vendor Advisory)

Frequently asked questions

What is CVE-2026-6322?: CVE-2026-6322 is a high-severity vulnerability in Fast-uri, classified under CWE-436. CVSS score: 7.5/10. Published 2026-05-05.
How severe is CVE-2026-6322?: High severity. CVSS v3 base score is 7.5 out of 10.