CVE-2026-5749
HIGH EPSS 18.6%
Published Apr 22, 20262mo ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
18.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-306 Missing Authentication for Critical Function Authentication
References 1
- incibe.es https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-fullstep
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.