CVE-2026-44423: CWE-639: Authorization Bypass Through User-Controlled Key in shellhub-io shellhub
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.
AI Analysis
Technical Summary
ShellHub, a centralized SSH gateway, prior to version 0.24.2, has an authorization bypass vulnerability identified as CVE-2026-44423 (CWE-639). The GET /api/sessions/:uid endpoint returns full session objects for any authenticated user without restricting access to the user's own tenant namespace. This allows authenticated users to access session records of other tenants, exposing sensitive session metadata. The vulnerability is addressed in version 0.24.2 of ShellHub.
Potential Impact
An authenticated user can access session information belonging to other tenants, potentially exposing sensitive metadata such as SSH usernames, device identifiers, remote IP addresses, terminal types, authentication status, and timestamps. There is no indication of direct impact on confidentiality of session contents or system integrity. No known exploits are reported in the wild.
Mitigation Recommendations
Upgrade ShellHub to version 0.24.2 or later, where this authorization bypass vulnerability is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed fixed in version 0.24.2.
CVE-2026-44423: CWE-639: Authorization Bypass Through User-Controlled Key in shellhub-io shellhub
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
ShellHub, a centralized SSH gateway, prior to version 0.24.2, has an authorization bypass vulnerability identified as CVE-2026-44423 (CWE-639). The GET /api/sessions/:uid endpoint returns full session objects for any authenticated user without restricting access to the user's own tenant namespace. This allows authenticated users to access session records of other tenants, exposing sensitive session metadata. The vulnerability is addressed in version 0.24.2 of ShellHub.
Potential Impact
An authenticated user can access session information belonging to other tenants, potentially exposing sensitive metadata such as SSH usernames, device identifiers, remote IP addresses, terminal types, authentication status, and timestamps. There is no indication of direct impact on confidentiality of session contents or system integrity. No known exploits are reported in the wild.
Mitigation Recommendations
Upgrade ShellHub to version 0.24.2 or later, where this authorization bypass vulnerability is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed fixed in version 0.24.2.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-06T14:40:00.953Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a04f25dcbff5d8610127f49
Added to database: 5/13/2026, 9:51:25 PM
Last enriched: 5/13/2026, 10:07:39 PM
Last updated: 5/14/2026, 6:52:43 AM
Views: 4
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