CVE-2026-63464High· 7.7▾ MidnightPoC availablenebula-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/w…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 42.4 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
Exploit / PoC code exists
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
github.com/forgekeep/nebula-mesh >= 0.6.0, < 0.7.2Patched in:
github.com/forgekeep/nebula-mesh 0.7.2Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
GHSA-7rx3-5wx3-5v76High· 7.7Nebula-mesh allows non-admin operators to disable webhook SSRF protection via `allow_private`
GO-2026-5985NoneNebula-mesh allows non-admin operators to disable webhook SSRF protection via `allow_private` in github.com/forgekeep/nebula-mesh
CVE-2026-55512Medium· 5.3nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN
CVE-2026-55513Medium· 5.4nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN
CVE-2026-61699High· 8.1nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN
CVE-2026-53604High· 7.1nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN