CVE-2026-44423CWE-639

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

Medium · published May 13, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
27.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00352 · 27.6th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-05-13T21:07Z
EPSS history
Timeline
  • 13 MAY 21:07Z
    ShellHub: Cross-tenant IDOR in `GET /api/sessions/:uid` discloses SSH session data
    cvelistv5