CVE-2026-38651

Authentication Bypass vulnerability exists in Netmaker versions prior to 1.5.0. The VerifyHostToken function in logic/jwts.go fails to validate the JWT signature when verifying host tokens. An attacker can forge a JWT signed with any arbitrary key and use it to impersonate any host in the network, gaining access to sensitive information

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/gravitl/netmaker/commit/5309aa70d464ef565911369714d661a61481a79b	Patch
https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass	Exploit Third Party Advisory
https://www.zyenra.com/blog/netmaker-jwt-verification-bypass	Exploit Third Party Advisory
https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass/	Exploit Third Party Advisory
https://www.zyenra.com/blog/netmaker-jwt-verification-bypass	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:netmaker:netmaker:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-28 16:16

Updated : 2026-06-17 10:41

NVD link : CVE-2026-38651

Mitre link : CVE-2026-38651

CVE.ORG link : CVE-2026-38651

JSON object : View

Products Affected

netmaker

netmaker

CWE

CWE-347

Improper Verification of Cryptographic Signature

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