Vulnerability · Published Oct 22, 2026 · Assigned by VulnCheck

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

High 8.3

In plain English

A high-severity authorization bypass via user-controlled key in netmaker from gravitl. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)8.3High

Exploit odds (30 days)0.4%top 69.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
gravitl	netmaker	0 – through 1.7.0

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

References

https://github.com/gravitl/netmaker/issues/3875 issue-tracking
https://github.com/gravitl/netmaker/pull/4153 patch, issue-tracking
https://github.com/gravitl/netmaker/commit/332d8b9bab030ee65e78b9141259e4e0e80ac4b0 patch
https://github.com/gravitl/netmaker/blob/v1.7.0/controllers/ext_client.go#L879 technical-description
https://github.com/gravitl/netmaker product
VulnCheck Advisory: Netmaker through 1.7.0 Authorization Bypass via updateExtClient Unscoped Lookup third-party-advisory