forgekeep nebula-mesh up to 0.3.3 API Authorization internal/api/hosts.go privileges management

Summaryinfo

A vulnerability was found in forgekeep nebula-mesh up to 0.3.3. It has been declared as critical. This affects an unknown function of the file internal/api/hosts.go of the component API Authorization. Such manipulation leads to privileges management. This vulnerability is listed as CVE-2026-47724. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in forgekeep nebula-mesh up to 0.3.3. Affected by this issue is some unknown processing of the file internal/api/hosts.go of the component API Authorization. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, and integrity. CVE summarizes:

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.4, the `/api/v1/*` route surface trusts the bearer token alone for authorisation on most endpoints. The codebase itself admits this at `internal/api/hosts.go:384`: "API trusts the bearer token for authorisation; per-CA ownership is enforced only in the Web layer." The Web UI gates state-changing routes through `loadAccessibleCA` (`internal/web/cas.go`); CA-management endpoints in `internal/api/cas.go` ALSO have proper `canAccessCA` gates. The gap is on the host, network, firewall, mobile-bundle, and most operator endpoints. Combined with the per-operator CA model from ADR 0002, this gives any non-admin operator API key broad cross-tenant access — instant privilege escalation in the worst case. Version 0.3.4 fixes the issue.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-47724 since 05/19/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 0.3.4 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• forgekeep

Name

• nebula-mesh

Version

• 0.3.0
• 0.3.1
• 0.3.2
• 0.3.3

Website

• Product: https://github.com/forgekeep/nebula-mesh/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion