CVE-2026-115325
Netmaker through 1.7.0 Authorization Bypass via updateExtClient Unscoped Lookup
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 22, 2026
- Updated
- Oct 23, 2026
- Reserved
- Oct 22, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 8.3 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
netmakergravitl |
|
References
- https://github.com/gravitl/netmaker/issues/3875issue-tracking
- https://github.com/gravitl/netmaker/pull/4153patchissue-tracking
- https://github.com/gravitl/netmaker/commit/332d8b9bab030ee65e78b9141259e4e0e80ac4b0patch
- https://github.com/gravitl/netmaker/blob/v1.7.0/controllers/ext_client.go#L879technical-description
- https://github.com/gravitl/netmakerproduct
- VulnCheck Advisory: Netmaker through 1.7.0 Authorization Bypass via updateExtClient Unscoped Lookupthird-party-advisory
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