CVE-2026-6321
Severity CVSS v4.0:
Pending analysis
Type:
CWE-22
Path Traversal
Publication date:
04/05/2026
Last modified:
04/05/2026
Description
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
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH