CVE-2026-5749

HIGH

Inadequate access control vulnerability in Fullstep

Title source: cna
STIX 2.1

Description

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.

Scores

CVSS v4 8.7
EPSS 0.0007
EPSS Percentile 20.1%
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

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-306
Status published
Products (2)
Fullstep/Fullstep 5
Fullstep/Fullstep 5.30.07
Published Apr 22, 2026
Tracked Since Apr 22, 2026