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.
History

Tue, 08 Sep 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 07 Sep 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Forgekeep
Forgekeep nebula-mesh
Vendors & Products Forgekeep
Forgekeep nebula-mesh

Fri, 04 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
Description 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.
Title nebula-mesh: Operator session tokens stored in plaintext in the database
Weaknesses CWE-312
CWE-522
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-09-04T19:40:31.548Z

Updated: 2026-09-08T17:49:14.966Z

Reserved: 2026-06-09T19:39:52.404Z

Link: CVE-2026-53603

cve-icon Vulnrichment

Updated: 2026-09-08T17:49:10.616Z

cve-icon NVD

Status : Deferred

Published: 2026-09-04T20:17:23.287

Modified: 2026-09-08T21:05:26.920

Link: CVE-2026-53603

cve-icon Redhat

No data.