CVE-2026-44423
ShellHub: Cross-tenant IDOR in `GET /api/sessions/:uid` discloses SSH session data
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | shellhub-io |
| Product | shellhub |
| Published | May 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
shellhub-io / shellhub
< 0.24.2