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CVE-2026-47724— nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalation

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 0.3.4之前版本存在授权问题漏洞，该漏洞源于对 路由的授权验证不当，只信任 bearer token，导致任何非管理员操作者API密钥可跨租户访问，造成权限提升。

CVSS 9.9 · Critical EPSS 0.35% · P28

Affected Version Matrix 1

VendorProduct Version RangeStatus
juev nebula-mesh < 0.3.4 affected
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I. Basic Information for CVE-2026-47724

Vulnerability Information
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Vulnerability Title
nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalation
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 0.3.4, the `/api/v1/*` route surface trusts the bearer token alone for authorisation on most endpoints. The codebase itself admits this at `internal/api/hosts.go:384`: "API trusts the bearer token for authorisation; per-CA ownership is enforced only in the Web layer." The Web UI gates state-changing routes through `loadAccessibleCA` (`internal/web/cas.go`); CA-management endpoints in `internal/api/cas.go` ALSO have proper `canAccessCA` gates. The gap is on the host, network, firewall, mobile-bundle, and most operator endpoints. Combined with the per-operator CA model from ADR 0002, this gives any non-admin operator API key broad cross-tenant access — instant privilege escalation in the worst case. Version 0.3.4 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Forgekeep nebula-mesh 授权问题漏洞
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 0.3.4之前版本存在授权问题漏洞，该漏洞源于对 `/api/v1/*` 路由的授权验证不当，只信任 bearer token，导致任何非管理员操作者API密钥可跨租户访问，造成权限提升。
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 < 0.3.4 -

II. Public POCs for CVE-2026-47724

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7302 chars
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III. Intelligence Information for CVE-2026-47724

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Patches & Fixes for CVE-2026-47724 (1)

Vendor Advisories for CVE-2026-47724 (1)

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

CVE-2026-47722 8.7 HIGH nebula-mesh: Host advanced overrides allow YAML injection into agent config.yml
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-862

V. Comments for CVE-2026-47724

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