CVE-2026-53603

Summary

nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. Prior to version 0.3.8, Operator session tokens are stored in plaintext in the operator_sessions table (the token column is the PRIMARY KEY). The session token is a 32-byte random hex value sent directly in a cookie and valid for 24 hours. Anyone who can read the database (backup, snapshot, file copy, or SQL-level disclosure) obtains every active session token and can hijack operator sessions directly, with no further authentication. This issue has been patched in version 0.3.8.

Affected Software

VendorProductVersion RangeStatus
forgekeepnebula-mesh< 0.3.8affected

Weaknesses

  • CWE-312: CWE-312: Cleartext Storage of Sensitive Information
  • CWE-522: CWE-522: Insufficiently Protected Credentials

References