CVE-2026-44423

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

State: Published
Severity: 6.5 Medium
Published: May 13, 2026
Updated: May 14, 2026
Reserved: May 6, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

Product	Versions
shellhubshellhub-io	< 0.24.2Affected

References

https://github.com/shellhub-io/shellhub/security/advisories/GHSA-9w9c-9w8m-w89q

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