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CVE-2026-47722— nebula-mesh: Host advanced overrides allow YAML injection into agent config.yml

Quick assessment

Affected
juev nebula-mesh
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Forgekeep nebula-mesh是Forgekeep团队的一系列网络代理和VPN整合软件。 Forgekeep nebula-mesh 0.3.2之前版本存在代码注入漏洞，该漏洞源于在生成agent的config.yml时，未对operator提供的ListenHost和TunDevice字段进行字符或格式验证，直接将其插入到text/template中，可能导致代码注入。

CVSS 8.7 · High EPSS 0.47% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
juev nebula-mesh < 0.3.2 affected
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I. Basic Information for CVE-2026-47722

Vulnerability Information
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Vulnerability Title
nebula-mesh: Host advanced overrides allow YAML injection into agent config.yml
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Forgekeep nebula-mesh 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Forgekeep nebula-mesh是Forgekeep团队的一系列网络代理和VPN整合软件。 Forgekeep nebula-mesh 0.3.2之前版本存在代码注入漏洞，该漏洞源于在生成agent的config.yml时，未对operator提供的ListenHost和TunDevice字段进行字符或格式验证，直接将其插入到text/template中，可能导致代码注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
juev nebula-mesh < 0.3.2 -

II. Public POCs for CVE-2026-47722

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7551 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-47722

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Patches & Fixes for CVE-2026-47722 (1)

Vendor Advisories for CVE-2026-47722 (1)

Same Patch Batch · juev · 2026-07-23 · 3 CVEs total

CVE-2026-47724 9.9 CRITICAL nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escala
CVE-2026-47723 7.1 HIGH nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, e

IV. Related Vulnerabilities

Same product: nebula-mesh
Same vendor: juev
Same weakness: CWE-94

V. Comments for CVE-2026-47722

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