Description
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
Metrics
CVSS 3.1 8.2/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://github.com/gravitl/netmaker/commit/5309aa70d464ef565911369714d661a61481a79bPatch
- https://www.zyenra.com/advisories/netmaker-jwt-verification-bypassExploit, Third Party Advisory
- https://www.zyenra.com/blog/netmaker-jwt-verification-bypassExploit, Third Party Advisory
- https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass/Exploit, Third Party Advisory
- https://www.zyenra.com/blog/netmaker-jwt-verification-bypassExploit, Third Party Advisory
Timeline
- Published
- Apr 28, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Analyzed