CVE-2026-38651: netmaker · Improper Verification of Cryptographic Signature
Affects netmakerSource CVE Database V5
Not known to be exploited · CVSS 8.2 High : upgrade to 1.5.0 soon.
Data as of 26 Oct 2026, 13:47 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.5.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 28 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade github.com/gravitl/netmaker to 1.5.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Gogithub.com/gravitl/netmakerpkg:golang/github.com/gravitl/netmakerOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, restricting network access to trusted hosts and minimizing exposure of Netmaker services may reduce risk.
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
References
- github.com/gravitl/netmaker/commit/5309aa70d464ef565911369714d661a61481a79b (opens in a new tab)
- zyenra.com/blog/netmaker-jwt-verification-bypass (opens in a new tab)
- zyenra.com/advisories/netmaker-jwt-verification-bypass (opens in a new tab)
- zyenra.com/advisories/netmaker-jwt-verification-bypass/ (opens in a new tab)