--- cve: "CVE-2026-6322" severity: "HIGH" cvss: 7.5 epss: "48%" vendor: "fast-uri" kev: false exploited: false published: "2026-05-05 11:16:33" tags: [cve, security, high] source: tsecurity.de CVE-Dossier exported: "2026-09-03T10:27:22+02:00" --- # CVE-2026-6322 > 7.5 HIGH · 🧪 PoC ## Beschreibung 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 ## CVSS-Vektor ``` CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N ``` | Metrik | Wert | Bewertung | |---|---|---| | AV Angriffsvektor | Netzwerk | bad | | AC Komplexität | Gering | bad | | PR Privilegien | Keine | bad | | UI Interaktion | Keine | bad | | S Scope | Unverändert | good | | C Vertraulichkeit | Keine | good | | I Integrität | Hoch | bad | | A Verfügbarkeit | Keine | good | ## Patch verfügbar (OSV) - 919dd8ea7689fcc220d0d9b71307f5095e723ef9 (Commit) ## Referenzen - - - - - - - - - - - - --- _Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-6322) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_