OpenRemote has Cross-Realm User Information Disclosure in UserResourceImpl

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

7.7 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS

• CVE-2026-54641: 0.29% estimated exploitation activity in the next 30 days; percentile 21.96 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary A realm admin of tenant B can read the profile, client roles, and realm roles of any user in any other realm (including the master realm) by supplying the target user's UUID in the REST API path. Three read endpoints in UserResourceImpl check whether the caller holds the read:admin role but omit a check that the target user belongs to the caller's own realm. The vulnerability enables cross-tenant user enumeration and privilege-level reconnaissance. On a multi-tenant deployment the master realm administrator account is reachable from any tenant realm admin. Details The affected file is manager/src/main/java/org/openremote/manager/security/UserResourceImpl.java. Three methods are missing an authenticated-realm guard: get (line 102): public User get(RequestParams requestParams, String realm, String userId) { boolean hasAdminReadRole = hasResourceRole(ClientRole.READADMIN.getValue(), Constants.KEYCLOAKCLIENTID); if (!hasAdminReadRole && !Objects.equals(getUserId(), userId)) {…

Published by the source

6 Jul 2026, 20:47 UTC

Last modified by the source

13 Oct 2026, 16:08 UTC

Source last checked

26 Oct 2026, 16:58 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-xqr9-4wvv-gvch

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# Patch Next advisory brief: CVE-2026-54641

Advisory: OpenRemote has Cross-Realm User Information Disclosure in UserResourceImpl
IDs: CVE-2026-54641, GHSA-xqr9-4wvv-gvch
Record: https://patchnext.com/advisories/cve-2026-54641 (revision 1, source checked 26 Oct 2026, 16:58 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: io.openremote:openremote-manager 1.24.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven io.openremote:openremote-manager: affected < 1.24.2; fixed in 1.24.2

## Suggested inspection (read-only)
- Maven io.openremote:openremote-manager: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on io.openremote:openremote-manager.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-xqr9-4wvv-gvch (GitHub-reviewed advisory GHSA-xqr9-4wvv-gvch lists affected ranges: Maven io.openremote:openremote-manager >=0 <1.24.2)

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