---
id: CVE-2026-115325
title: >-
  Netmaker through 1.7.0 Authorization Bypass via updateExtClient Unscoped
  Lookup
summary: >-
  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…
severity: high
cvss: 8.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L'
cvssSource: cna
cwe:
  - CWE-639
vendor: gravitl
product: netmaker
affected:
  - netmaker <= 1.7.0
published: '2026-10-22'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T10:57:43.846Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-115325'
references:
  - url: 'https://github.com/gravitl/netmaker/issues/3875'
  - url: 'https://github.com/gravitl/netmaker/pull/4153'
  - url: >-
      https://github.com/gravitl/netmaker/commit/332d8b9bab030ee65e78b9141259e4e0e80ac4b0
  - url: >-
      https://github.com/gravitl/netmaker/blob/v1.7.0/controllers/ext_client.go#L879
  - url: 'https://github.com/gravitl/netmaker'
  - url: >-
      https://www.vulncheck.com/advisories/netmaker-through-1.7.0-authorization-bypass-via-updateextclient-unscoped-lookup
    label: >-
      VulnCheck Advisory: Netmaker through 1.7.0 Authorization Bypass via
      updateExtClient Unscoped Lookup
tags:
  - cve.org
ingestedAt: '2026-10-22T11:37:02.335Z'
---

## Overview

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

- `netmaker <= 1.7.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.