VULNERABILITY INTELLIGENCE

CVE-2026-6321

CVSS score7.5 HIGH
EPSS probability0.63%
CISA KEVNot currently listed
Published2026-05-04
Last modified2026-09-10
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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 <= 3.1.0 are affected. Update to 3.1.1 or later.

Weakness classification

  • ce714d77-add3-4f53-aff5-83d477b104bb: CWE-22
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-22

Primary references