GHSA-qpv2-rwc8-c993 · Severity: critical · Ecosystem: go — Netmaker does not verify JWT signatures for host tokens
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
Conclusion & alert: CVE-2026-38651 is rated Exploit Available (55.5/100): CVSS High severity, with low exploitation likelihood (EPSS 0.30%). Core evidence: 3 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.05% | 0.30% | +0.25% |
| 2 | 2026-05-19 | 0.04% | 0.05% | +0.01% |
| 3 | 2026-04-29 | — | 0.04% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.2 | 3.1 | HIGH |
|
3.9 | 4.2 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-qpv2-rwc8-c993 · Severity: critical · Ecosystem: go — Netmaker does not verify JWT signatures for host tokens
| URL | Tags |
|---|---|
| https://github.com/gravitl/netmaker/commit/5309aa70d464ef565911369714d661a61481a79b | Patch |
| https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass | Exploit Third Party Advisory |
| https://www.zyenra.com/blog/netmaker-jwt-verification-bypass | Exploit Third Party Advisory |
| https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass/ | Exploit Third Party Advisory |