CVE-2026-47723: high-severity vulnerability in juev nebula-mesh
nebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.5%
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
juev · nebula-meshRelated CVEs — juev nebula-mesh
In the same product, most dangerous first.
CVE-2026-48025MEDIUMnebula-mesh: Decrypted CA private key persists in heap after signingEPSS 0.5%CVE-2026-49258HIGHNebula Mesh: Web UI lacks ownership checks, enabling cross-operator access to hosts and networks (read, block, delete)EPSS 0.5%CVE-2026-47724CRITICALnebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalationEPSS 0.5%CVE-2026-47722HIGHnebula-mesh: Host advanced overrides allow YAML injection into agent config.ymlEPSS 0.5%CVE-2026-47726HIGHnebula-mesh: GET /api/v1/audit-log discloses all entries to any operatorEPSS 0.3%CVE-2026-48058MEDIUMnebula-mesh: Session and OIDC state cookies lack the Secure attributeEPSS 0.2%