High severity · published Oct 22, 2026
CVE-2026-115325
Netmaker through 1.7.0 Authorization Bypass via updateExtClient Unscoped Lookup
New
8.3
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
netmaker · gravitl
through 1.7.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-115325
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-115325
github.com
https://github.com/gravitl/netmaker
github.com
https://github.com/gravitl/netmaker/blob/v1.7.0/controllers/ext_client.go#L879
github.com
https://github.com/gravitl/netmaker/commit/332d8b9bab030ee65e78b9141259e4e0e80ac4b0
github.com
https://github.com/gravitl/netmaker/issues/3875
github.com
https://github.com/gravitl/netmaker/pull/4153
www.vulncheck.com
https://www.vulncheck.com/advisories/netmaker-through-1.7.0-authorization-bypass-via-updateextclient-unscoped-lookup
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