Auth bypass in Gravitl Netmaker
CVE-2026-115325
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/gravitl/netmaker/issues/3875 (issue-tracking)
- github.com/gravitl/netmaker/pull/4153 (issue-tracking, patch)
- github.com/gravitl/netmaker/commit/332d8b9bab030ee65e78b9141259e4e0e80ac4b0 (patch)
- github.com/gravitl/netmaker/blob/v1.7.0/controllers/ext_client.go (technical-description)
- github.com/gravitl/netmaker (product)
- www.vulncheck.com/advisories/netmaker-through-1.7.0-authorization-bypass-via-up… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-115325?
- CVE-2026-115325 is a high-severity vulnerability in Gravitl Netmaker, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.3/10. Published 2026-10-22.
- How severe is CVE-2026-115325?
- High severity. CVSS v3 base score is 8.3 out of 10.