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Netmaker through 1.7.0 Authorization Bypass via updateExtClient Unscoped Lookup

Type: advisorySources: OSV

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.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-115325
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 19:32 UTC · Revision 1

Source evidence

Netmaker through 1.7.0 Authorization Bypass via updateExtClient Unscoped Lookup

core-osv · Original source

Published 22 Oct 2026, 10:57 UTC

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.

osv:CVE-2026-115325
Complete source record
{
  "id": "9b448406bd8de12caf8df796855fd3a52367b18a39ec7e7cfa0169df7aad52c6",
  "url": "https://osv.dev/vulnerability/CVE-2026-115325",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "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 can send PUT requests to /api/extclients/{network}/{clientid} to replace public keys, disable clients, and obtain WireGuard private keys.",
    "evidence": "osv:CVE-2026-115325",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-115325",
      "aliases": [
        "CVE-2026-115325"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gravitl/netmaker",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "332d8b9bab030ee65e78b9141259e4e0e80ac4b0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.7.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "332d8b9bab030ee65e78b9141259e4e0e80ac4b0"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.7.0",
            "v1.6.0",
            "v1.5.1",
            "v1.5.0",
            "v1.4.0",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0",
            "v0.99.0",
            "v0.90.0",
            "v0.30.0",
            "v0.26.0",
            "v0.25.0",
            "v0.24.3",
            "v0.24.2",
            "v0.24.1",
            "v0.24.0",
            "v0.23.0",
            "v0.22.0",
            "v0.21.2",
            "v0.21.1",
            "v0.21.0",
            "v0.20.6",
            "v0.20.4",
            "v0.20.5",
            "v0.20.3",
            "v0.20.2",
            "v0.20.1",
            "v0.20.0",
            "v0.19.0",
            "v0.18.7",
            "v0.18.6",
            "v0.18.4",
            "v0.18.3",
            "v0.18.2",
            "v0.18.1",
            "v0.18.0",
            "v0.17.0",
            "v0.16.2",
            "v0.16.1",
            "v0.16.0",
            "v0.15.2",
            "v0.15.1",
            "v0.14.6",
            "v0.14.5",
            "v0.14.4",
            "v0.14.3",
            "v0.14.2",
            "v0.14.1",
            "v0.14.1-testing",
            "v0.13.5-testing",
            "v0.12.0",
            "v0.11.1_testing",
            "v0.11.1-testing",
            "v0.11.0",
            "v0.9.4",
            "v0.10.0",
            "v0.9.3",
            "v0.9.2",
            "v0.9.1",
            "v0.9.0",
            "v0.8.0",
            "v0.7.1",
            "v0.7",
            "0.7",
            "v0.5",
            "v0.3",
            "v0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-115325.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.694100750Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115325.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-115325",
        "https://www.vulncheck.com/advisories/netmaker-through-1.7.0-authorization-bypass-via-updateextclient-unscoped-lookup",
        "https://github.com/gravitl/netmaker/issues/3875",
        "https://github.com/gravitl/netmaker/commit/332d8b9bab030ee65e78b9141259e4e0e80ac4b0",
        "https://github.com/gravitl/netmaker/pull/4153",
        "https://github.com/gravitl/netmaker",
        "https://github.com/gravitl/netmaker/blob/v1.7.0/controllers/ext_client.go#L879"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115325.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-115325",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498745,
  "published_at": "2026-10-22T10:57:43.846+00:00"
}