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TI-2026-32367 Aliases CVE-2026-44426GHSA-vwx9-7qcf-gg7f

ShellHub: Cross-tenant IDOR in `GET /api/namespaces/:tenant` via API Key bypasses membership check

Priority MEDIUM 62CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-639.

Summary

ShellHub is a centralized SSH gateway. Prior to 0.24.2, GET /api/namespaces/:tenant returns the full namespace object — including the members list (user IDs, e-mails, roles), settings, and device counts — to any caller authenticated by an API Key, for any tenant, regardless of the API Key's own tenant scope. The handler conditionally skips the membership check when the user ID (X-ID) is absent, which is exactly the case for API Key authentication. This vulnerability is fixed in 0.24.2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00308 23rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed shellhub (shellhub-io): 0.24.2github.com/shellhub-io/shellhub (Go): 0.24.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
shellhub-ioshellhubbefore 0.24.20.24.2Patch availableCNA
—github.com/shellhub-io/shellhub (Go)before 0.24.20.24.2Patch availableGHSA-vwx9-7qcf-gg7f
  • shellhub Vendorshellhub-io Affected before 0.24.2 Fixed in 0.24.2 Patch available CNA
  • github.com/shellhub-io/shellhub (Go) Vendor— Affected before 0.24.2 Fixed in 0.24.2 Patch available GHSA-vwx9-7qcf-gg7f

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:shellhub:shellhub:*:*:*:*:*:*:*:*before 0.24.2Vulnerableshellhub-io
  • cpe:2.3:a:shellhub:shellhub:*:*:*:*:*:*:*:* Versions before 0.24.2 Vulnerable ·shellhub-io

Remediation

  • Fix · CNA shellhub (shellhub-io) Fixed in 0.24.2
  • Fix · GHSA-vwx9-7qcf-gg7f github.com/shellhub-io/shellhub (Go) Fixed in 0.24.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44426
  2. 2026-10-03 Alias added: GHSA-vwx9-7qcf-gg7f

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-32365 ShellHub: Cross-tenant IDOR in `GET /api/devices/:uid` discloses device data of any namespace CVSS 3.1MEDIUM 6.5
  • TI-2026-32364 ShellHub: Cross-tenant IDOR in `GET /api/sessions/:uid` discloses SSH session data CVSS 3.1MEDIUM 6.5
  • TI-2026-32366 ShellHub: Crash-DoS via field injection in filter and sort-by parameters CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences