CVE-2026-44423

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 6.5
EPSS 0.0025
EPSS Percentile 15.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-639
Status published
Products (3)
shellhub/shellhub < 0.24.2
shellhub-io/shellhub 0 - 0.24.2Go
shellhub-io/shellhub < 0.24.2
Published May 13, 2026
Tracked Since May 14, 2026