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CVE-2026-55513GO-2026-5987GHSA-G4X6-JCVR-9M3G

nebula-mesh: Web UI host creation ignores configured enrollment token TTL and mints 24-hour bearer enrollment tokens

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 0.5.0
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: partial

Summary

nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. From version 0.3.0 to before version 0.5.0, the nebula-mgmt Web UI host-creation path ignores both the server-wide enrollment_token_ttl security setting and per-network network_config.enrollment_token_ttl overrides. API host creation and token-regeneration paths use the configured TTL resolver, but POST /ui/hosts hardcodes now.Add(24 * time.Hour) for newly minted agent enrollment tokens. In deployments that intentionally reduce enrollment-token lifetime, any authenticated operator who can create a host through the Web UI can still mint a bearer enrollment token valid for about 24 hours. This issue has been patched in version 0.5.0.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • forgekeep nebula-mesh

    From 0.3.0 · fixed in 0.5.0

  • github.com/forgekeep/nebula-meshGo

    From 0.4.0 · fixed in 0.5.0

  • github.com/juev/nebula-meshGo

    From 0.3.0

  • github.com/forgekeep/nebula-meshGo

    From 0.3.0 · fixed in 0.5.0

References 3

GitHub · forgekeep/nebula-mesh