CVE-2026-44423 MEDIUM

CVE-2026-44423: ShellHub: Cross-tenant IDOR in `GET /api/sessions/:uid` discloses SSH session data

Vendor Shellhub-Io
Product shellhub
Weakness CWE-639 · IDOR
Published May 13, 2026
Last update May 14, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

ShellHub is a centralized SSH gateway. Prior to 0.24.2, GET /api/sessions/:uid returns the full session object for any authenticated caller, without scoping by the caller's tenant. An authenticated user can read session records (SSH username, device UID, remote IP, terminal type, authenticated flag, timestamps) belonging to any other namespace. This vulnerability is fixed in 0.24.2.

Key dates

02Disclosure timeline

May 13, 2026 CVE published
May 14, 2026 Record updated