CVE-2026-5749CWE-306

Inadequate access control vulnerability in Fullstep

High · published April 22, 2026

CVSS v4.0
8.7
EPSS
0%
Percentile
35.1
In the wild
Unconfirmed
What it is

Inadequate access control in the registration process in Fullstep V5, which could allow unauthenticated users to obtain a valid JWT token with which to interact with authenticated API resources. Successful exploitation of this vulnerability could allow an unauthenticated attacker to compromise the confidentiality of the affected resource, provided they have a valid token with which to interact with the API.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00419 · 35.1th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-04-22T13:23Z
EPSS history
Timeline
  • 22 APR 13:23Z
    Inadequate access control vulnerability in Fullstep
    cvelistv5