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
netmaker: netmaker
References5
- github.com/gravitl/netmaker/commit/5309aa70d464ef565911369714d6… Patch
- www.zyenra.com/advisories/netmaker-jwt-verification-bypass ExploitThird Party Advisory
- www.zyenra.com/blog/netmaker-jwt-verification-bypass ExploitThird Party Advisory
- www.zyenra.com/advisories/netmaker-jwt-verification-bypass/ ExploitThird Party Advisory
- www.zyenra.com/blog/netmaker-jwt-verification-bypass ExploitThird Party Advisory
Metrics
- CVSS 3.1
-
8.2
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N - EPSS — exploit probability
- 0% percentile: 29 · as of 13 November 2026
- CWE
- CWE-347
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