critical8.2
CVE-2026-38651
Authentication Bypass vulnerability exists in Netmaker versions prior to 1.5.0.
Impact
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
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/gravitl/netmaker | < 1.5.0 | 1.5.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Netmaker | Netmaker | before 1.5.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-qpv2-rwc8-c993
- https://nvd.nist.gov/vuln/detail/CVE-2026-38651
- https://github.com/gravitl/netmaker/commit/5309aa70d464ef565911369714d661a61481a79b
- https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass
- https://www.zyenra.com/blog/netmaker-jwt-verification-bypass
- https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass/