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2 vulnerabilities by fast-uri
CVE-2026-6322 (GCVE-0-2026-6322)
Vulnerability from cvelistv5 – Published: 2026-05-05 10:29 – Updated: 2026-05-05 12:55
VLAI
Title
fast-uri vulnerable to host confusion via percent-encoded authority delimiters
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-436 - Interpretation Conflict
Assigner
References
Impacted products
Credits
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CVE-2026-6321 (GCVE-0-2026-6321)
Vulnerability from cvelistv5 – Published: 2026-05-04 19:31 – Updated: 2026-05-05 12:44
VLAI
Title
fast-uri vulnerable to path traversal via percent-encoded dot segments
Summary
fast-uri decoded percent-encoded path separators and dot segments before applying dot-segment removal in its normalize() and equal() functions. Encoded path data was treated like real slashes and parent-directory references, so distinct URIs could collapse onto the same normalized path. Applications that normalize or compare attacker-controlled URLs to enforce path-based policy can be bypassed, with a path that appears confined under an allowed prefix normalizing to a different location. Versions <= 3.1.0 are affected. Update to 3.1.1 or later.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Credits
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