CVE-2026-63464
7.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Summary
nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. From version 0.6.0 to before version 0.7.2, non-admin operators (role user) can set allow_private: true on their own managed webhook subscription (POST/PATCH /api/v1/webhook-subscriptions). No admin check exists on this field. At delivery time, allow_private switches the dispatcher to an unguarded HTTP client, bypassing the private/loopback/link-local SSRF guard — letting a low-privilege operator make the server request internal addresses. This issue has been patched in version 0.7.2.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| forgekeep | nebula-mesh | >= 0.6.0, < 0.7.2 | affected |
Weaknesses
- CWE-862: CWE-862: Missing Authorization
- CWE-918: CWE-918: Server-Side Request Forgery (SSRF)
References
- https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-7rx3-5wx3-5v76
- https://github.com/forgekeep/nebula-mesh/commit/f3c54530e388dd21763e548923426e60a8e93ff0
- https://github.com/forgekeep/nebula-mesh/releases/tag/v0.7.2
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