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OpenAdvisories
Medium · 6.5 CVE-2026-44423 EUVD-2026-30187GHSA-9w9c-9w8m-w89qGO-2026-5302

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

Published May 13, 2026 · Updated May 14, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
shellhub-io shellhub < 0.24.2 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/shellhub-io/shellhub < 0.24.2 0.24.2 GHSA-9w9c-9w8m-w89q

Advisories 1

References