{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-6322","assignerOrgId":"ce714d77-add3-4f53-aff5-83d477b104bb","state":"PUBLISHED","assignerShortName":"openjs","dateReserved":"2026-04-14T20:28:09.160Z","datePublished":"2026-05-05T10:29:16.378Z","dateUpdated":"2026-05-05T12:55:43.750Z"},"containers":{"cna":{"providerMetadata":{"orgId":"ce714d77-add3-4f53-aff5-83d477b104bb","shortName":"openjs","dateUpdated":"2026-05-05T10:29:16.378Z"},"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"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":[{"vendor":"fast-uri","product":"fast-uri","defaultStatus":"unaffected","versions":[{"versionType":"semver","status":"affected","version":"0","lessThan":"3.1.2"},{"versionType":"semver","status":"unaffected","version":"3.1.2"}],"packageURL":"pkg:npm/fast-uri"}],"references":[{"url":"https://github.com/fastify/fast-uri/security/advisories/GHSA-v39h-62p7-jpjc"},{"url":"https://cna.openjsf.org/security-advisories.html"}],"credits":[{"lang":"en","type":"reporter","value":"Jvr"},{"lang":"en","type":"remediation developer","value":"Matteo Collina"},{"lang":"en","type":"remediation developer","value":"Ulises Gascón"},{"lang":"en","type":"remediation reviewer","value":"KaKa"}],"title":"fast-uri vulnerable to host confusion via percent-encoded authority delimiters","metrics":[{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","baseScore":7.5,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-436","lang":"en","description":"CWE-436: Interpretation Conflict","type":"CWE"}]}],"x_generator":{"engine":"cve-kit 1.0.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-05T12:55:25.956279Z","id":"CVE-2026-6322","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-05T12:55:43.750Z"}}]}}