CVE-2026-44423

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

Published May 13, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-9w9c-9w8m-w89q ShellHub has cross-tenant IDOR in `GET /api/sessions/:uid` that discloses SSH session data
History
Type Values Removed Values Added
First Time appeared Shellhub
Shellhub shellhub
CPEs cpe:2.3:a:shellhub:shellhub:*:*:*:*:*:*:*:*
Vendors & Products Shellhub
Shellhub shellhub
Type Values Removed Values Added
First Time appeared Shellhub-io
Shellhub-io shellhub
Vendors & Products Shellhub-io
Shellhub-io shellhub
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title ShellHub: Cross-tenant IDOR in `GET /api/sessions/:uid` discloses SSH session data
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 14, 2026, 12:50 PM
Reserved
May 6, 2026, 2:40 PM
Status
Analyzed
Published
May 13, 2026, 10:16 PM
Modified
Nov 11, 2026, 8:10 PM