High 7.1Published Jul 23, 2026

CVE-2026-47723nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)

Updated under an hour ago (Oct 26, 2026, 3:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for juev nebula-mesh

Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-1021
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

juev nebula-mesh juev:nebula_mesh (from the name)	before 0.3.1	CNA record

References

References

https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-w7w5-5gcp-38rw	x-refsource-confirm
https://github.com/forgekeep/nebula-mesh/commit/b45fda5476c41ffcff1ca23058aef0fb851359c1	x-refsource-misc
https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.1	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.