Auth bypass in Shellhub
CVE-2026-44424
ShellHub is a centralized SSH gateway. Prior to 0.24.2, GET /api/devices/:uid returns the full device object whenever the caller is authenticated, without verifying that the device belongs to the caller's namespace (tenant). Any authenticated user (JWT or API Key) who knows or can guess a device UID can read device metadata from any other namespace. This vulnerability is fixed in 0.24.2.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.002 (15.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Shellhub
- Shellhub-io Shellhub — versions < 0.24.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-44424?
- CVE-2026-44424 is a medium-severity vulnerability in Shellhub, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-05-13.
- How severe is CVE-2026-44424?
- Medium severity. CVSS v3 base score is 6.5 out of 10.