CVE-2026-47722CWE-94

nebula-mesh: Host advanced overrides allow YAML injection into agent config.yml

High · published July 23, 2026

CVSS v4.0
8.7
EPSS
0%
Percentile
39.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00467 · 39.5th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-07-23T19:19Z
EPSS history
Timeline
  • 23 JUL 19:19Z
    nebula-mesh: Host advanced overrides allow YAML injection into agent config.yml
    cvelistv5