CVE-2026-6321 — fast-uri vulnerable to path traversal via percent-encoded dot segments
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 lik…
Published: 2026-05-04 · CVSS: 7.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7