What’s Vulnerable › Vulnerabilities

CVE-2026-38651

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-28 · updated 2026-06-17
• Weakness: CWE-347

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

Affected products

• gravitl netmaker: before 1.5.0 — fixed in 1.5.0

How to fix

Upgrade to a fixed version: gravitl netmaker 1.5.0. Check the vendor advisory for mitigations.

References

• 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/
• https://www.zyenra.com/blog/netmaker-jwt-verification-bypass

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