CVE-2026-47722: Juev Nebula-Mesh

High severity, CVSS 8.7. EPSS: 0.5% chance of exploitation in the next 30 days.

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, `internal/configgen/generator.go:86,108,119` interpolates the operator-supplied `ListenHost` and `TunDevice` fields raw into a `text/template` that produces the agent's `config.yml`. `internal/web/advanced.go:20-35` accepts both with only `strings.TrimSpace` — no character or shape validation. Version 0.3.2 fixes the issue.

Affected products

• Juev Nebula-Mesh: before 0.3.2 (fixed in 0.3.2)

Published 2026-07-23. Last modified 2026-07-30.