What’s Vulnerable › Vulnerabilities

CVE-2026-115325: Netmaker through 1.7.0 Authorization Bypass via updateExtClient Unscoped Lookup

• Severity: high (CVSS 8.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-22 · updated 2026-10-23
• Weakness: CWE-639

Description

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.

Affected products

• gravitl netmaker: through 1.7.0

References

• 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

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