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Vulnerability Details :

CVE-2026-38651

Summary
Assigner-mitre
Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At-28 Apr, 2026 | 00:00
Updated At-28 Apr, 2026 | 17:34
Rejected At-
Credits

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

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:mitre
Assigner Org ID:8254265b-2729-46b6-b9e3-3dfca2d5bfca
Published At:28 Apr, 2026 | 00:00
Updated At:28 Apr, 2026 | 17:34
Rejected At:
▼CVE Numbering Authority (CNA)

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
Vendor
n/a
Product
n/a
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
textN/An/a
Type: text
CWE ID: N/A
Description: n/a
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/gravitl/netmaker/commit/5309aa70d464ef565911369714d661a61481a79b
N/A
https://www.zyenra.com/blog/netmaker-jwt-verification-bypass
N/A
https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass
N/A
Hyperlink: https://github.com/gravitl/netmaker/commit/5309aa70d464ef565911369714d661a61481a79b
Resource: N/A
Hyperlink: https://www.zyenra.com/blog/netmaker-jwt-verification-bypass
Resource: N/A
Hyperlink: https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-347CWE-347 Improper Verification of Cryptographic Signature
Type: CWE
CWE ID: CWE-347
Description: CWE-347 Improper Verification of Cryptographic Signature
Metrics
VersionBase scoreBase severityVector
3.18.2HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Version: 3.1
Base score: 8.2
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass/
exploit
https://www.zyenra.com/blog/netmaker-jwt-verification-bypass
exploit
Hyperlink: https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass/
Resource:
exploit
Hyperlink: https://www.zyenra.com/blog/netmaker-jwt-verification-bypass
Resource:
exploit
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@mitre.org
Published At:28 Apr, 2026 | 16:16
Updated At:28 Apr, 2026 | 16:16

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

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
CPE Matches

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/gravitl/netmaker/commit/5309aa70d464ef565911369714d661a61481a79bcve@mitre.org
N/A
https://www.zyenra.com/advisories/netmaker-jwt-verification-bypasscve@mitre.org
N/A
https://www.zyenra.com/blog/netmaker-jwt-verification-bypasscve@mitre.org
N/A
Hyperlink: https://github.com/gravitl/netmaker/commit/5309aa70d464ef565911369714d661a61481a79b
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://www.zyenra.com/advisories/netmaker-jwt-verification-bypass
Source: cve@mitre.org
Resource: N/A
Hyperlink: https://www.zyenra.com/blog/netmaker-jwt-verification-bypass
Source: cve@mitre.org
Resource: N/A

Change History

0
Information is not available yet

Similar CVEs

1Records found

CVE-2023-28804
Matching Score-4
Assigner-Zscaler, Inc.
ShareView Details
Matching Score-4
Assigner-Zscaler, Inc.
CVSS Score-8.2||HIGH
EPSS-0.03% / 8.91%
||
7 Day CHG~0.00%
Published-23 Oct, 2023 | 13:33
Updated-17 Oct, 2024 | 15:09
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Linux ZCC allows unsigned updates, allowing elevated Code Execution

An Improper Verification of Cryptographic Signature vulnerability in Zscaler Client Connector on Linux allows replacing binaries.This issue affects Linux Client Connector: before 1.4.0.105

Action-Not Available
Vendor-Zscaler, Inc.
Product-client_connectorClient Connectorclient_connector
CWE ID-CWE-347
Improper Verification of Cryptographic Signature
Details not found