CVE-2026-44423

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

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.

Affected

shellhub-io · shellhub

CVSS v3.1 GITHUB

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.35% chance of exploitation in the next 30 days, 27th percentile

Published

2026-05-13

Updated

2026-05-14

Proof-of-concept exploits (1)

• advisories/GHSA-9w9c-9w8m-w89q

Security advisories

• shellhub-io/shellhub/security/advisories/GHSA-9w9c-9w8m-w89q

References

• CVE Record
• NVD entry