CVE-2026-115325

Netmaker through 1.7.0 contains an authorization bypass vulnerability in the updateExtClient handler that allows network-scoped users to modify external clients on other networks. Attackers with external client permissions on one network can send PUT requests to /api/extclients/{network}/{clientid} to replace public keys, disable clients, and obtain WireGuard private keys.

CVSS v3 8.3 HIGH

8.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/gravitl/netmaker
https://github.com/gravitl/netmaker/blob/v1.7.0/controllers/ext_client.go#L879
https://github.com/gravitl/netmaker/commit/332d8b9bab030ee65e78b9141259e4e0e80ac4b0
https://github.com/gravitl/netmaker/issues/3875
https://github.com/gravitl/netmaker/pull/4153
https://www.vulncheck.com/advisories/netmaker-through-1.7.0-authorization-bypass-via-updateextclient-unscoped-lookup

Configurations

No configuration.

History

22 Oct 2026, 11:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-22 11:17

Updated : 2026-10-23 15:17

NVD link : CVE-2026-115325

Mitre link : CVE-2026-115325

CVE.ORG link : CVE-2026-115325

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

{"id": "CVE-2026-115325", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-115325", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-23T14:54:19.333170Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"vendor": "gravitl", "product": "netmaker", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "1.7.0"}], "packageURL": "pkg:golang/github.com/gravitl/netmaker", "defaultStatus": "unaffected"}]}], "published": "2026-10-22T11:17:51.400", "references": [{"url": "https://github.com/gravitl/netmaker", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/gravitl/netmaker/blob/v1.7.0/controllers/ext_client.go#L879", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/gravitl/netmaker/commit/332d8b9bab030ee65e78b9141259e4e0e80ac4b0", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/gravitl/netmaker/issues/3875", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/gravitl/netmaker/pull/4153", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/netmaker-through-1.7.0-authorization-bypass-via-updateextclient-unscoped-lookup", "source": "disclosure@vulncheck.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-639"}]}], "descriptions": [{"lang": "en", "value": "Netmaker through 1.7.0 contains an authorization bypass vulnerability in the updateExtClient handler that allows network-scoped users to modify external clients on other networks. Attackers with external client permissions on one network can send PUT requests to /api/extclients/{network}/{clientid} to replace public keys, disable clients, and obtain WireGuard private keys."}], "lastModified": "2026-10-23T15:17:27.940", "sourceIdentifier": "disclosure@vulncheck.com"}