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CVE-2026-6322

HIGH · CVSS 7.5 EPSS 0.01% Public Exploit

Source: NVD + CISA KEV + EPSS · Published: 2026-05-05 · Last synced: 2026-06-04

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Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-6322
Severity
HIGH
CVSS
7.5
EPSS
0.01%

Original NVD 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.