# CVE-2026-47723

## Summary

- **CVE ID:** CVE-2026-47723
- **Severity:** HIGH
- **CVSS Score:** 7.1 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-1021
- **Published:** Jul 23, 2026
- **Last Modified:** Jul 24, 2026

## 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.

## Affected Products

- juev — nebula-mesh (< 0.3.1)

## References

- [CNA](https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-w7w5-5gcp-38rw)
- [CNA](https://github.com/forgekeep/nebula-mesh/commit/b45fda5476c41ffcff1ca23058aef0fb851359c1)
- [CNA](https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.1)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.53%
- **EPSS Percentile:** 42.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._