Vulnerability · Published Apr 28, 2026 · Assigned by mitre
CVE-2026-38651
High 8.2
In plain English
A high-severity security flaw in the github.com/gravitl/netmaker package (Go). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/gravitl/netmaker | 1.5.0 | GO-2026-5588 |
| Go | github.com/gravitl/netmaker | 1.5.0 | GHSA-qpv2-rwc8-c993 |
Affected products (as reported)
Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N