SEPTEMBER 20, 2026
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Case File

CVE-2026-47723

HIGH · CVSS 7.1 EPSS 0.30% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-23 · Last synced 2026-08-22

CyberRota Analysis

AI-Generated

The nebula-mesh control plane for Slack Nebula mesh VPN lacks critical browser security headers in its response paths, leaving it vulnerable to various web-based attacks such as clickjacking and content injection. This oversight affects all versions prior to 0.3.1, and users of the software should prioritize upgrading to the latest version to mitigate potential security risks. Organizations relying on nebula-mesh for secure communications should take immediate action to ensure their deployments are protected.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-47723
Severity
HIGH
CVSS
7.1
EPSS
0.30%

Original NVD Description

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.1, none of the response paths in `internal/web/` or `internal/api/` set the standard browser-security headers. `grep` for `Content-Security-Policy`, `X-Frame-Options`, `Strict-Transport-Security`, `X-Content-Type-Options`, `Referrer-Policy` returns zero matches across the codebase. Version 0.3.1 fixes the issue.