Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-56120. Reason: This candidate is a duplicate of CVE-2026-56120. Notes: All CVE users should reference CVE-2026-56120 instead of this candidate.

Affected: Maven: io.openremote:openremote-manager

### Summary OpenRemote Manager is vulnerable to a cross-tenant Insecure Direct Object Reference (IDOR) in the bulk alarm deletion endpoint. An authenticated user in any realm can delete alarms belonging to other realms (tenants) by supplying arbitrary alarm IDs. The vulnerability exists because the bulk removeAlarms() method only verifies that the caller's own realm is active and accessible, but never checks whether the targeted alarm IDs belong to the caller's realm before deleting them.

This allows any user with alarm write permissions in their own realm to permanently destroy alarm records — including safety-critical and security alerts — belonging to any other tenant on the same OpenRemote installation.

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[Additional Information] The singular removeAlarm() method correctly validates that the target alarm's realm matches the caller's access:

// CORRECT (singular): SentAlarm alarm = alarmService.getAlarm(alarmId); if (!isRealmActiveAndAccessible(alarm.getRealm())) { throw new ForbiddenException(...); }

The plural removeAlarms() method is missing this per-alarm realm check and only validates the caller's own realm — a check that is trivially satisfied for any authenticated user:

``` // VULNERABLE (plural): public void removeAlarms(RequestParams requestParams, List<Long> alarmIds) { if (!isRealmActiveAndAccessible(getAuthenticatedRealmName())) { throw new ForbiddenException(...); // always…