CVE-2026-67310 openremote CVE debrief

Who should care

Users of OpenRemote versions <= 1.26.2, particularly those responsible for vulnerability management, security teams, and operators of affected platforms, should be aware of this vulnerability and take necessary actions to protect their assets. This includes verifying OpenRemote version and applying patch 1.27.0 if vulnerable, restricting access to AlarmResourceImpl#setAssetLinks endpoint, and monitoring for suspicious alarm-asset link creation. Additionally, asset owners and security teams should review compensating controls for exposed systems while remediation is scheduled and verified, and track exceptions, retest remediated assets, and close the item only after evidence is documented. Those involved in change management and incident response should also be informed to ensure proper handling of this vulnerability. The vulnerability's impact on operational security and potential for asset disclosure necessitates prompt attention from relevant stakeholders to mitigate risks effectively. This may involve coordinating with vendors for support, assessing the current security posture, and implementing additional monitoring or defensive measures as needed to counter potential threats. By taking proactive steps, organizations can minimize the risk associated with this vulnerability and protect their critical assets from potential exploitation. Security teams should prioritize this vulnerability based on its CVSS score of 5.3 and MEDIUM severity, ensuring that appropriate measures are taken to safeguard against potential attacks. This includes not only immediate remediation efforts but also longer-term strategies for vulnerability management and asset protection. Effective communication and collaboration among different teams will be crucial in addressing this vulnerability comprehensively and reducing the risk of exploitation. Therefore, it is essential for all relevant parties to be informed and engaged in the response to this security issue. The involvement of multiple stakeholders will help ensure a thorough and timely mitigation of the vulnerability's impact, ultimately enhancing the security posture of affected organizations. In addition to technical measures, a

Technical summary

OpenRemote versions <= 1.26.2 contain an insecure direct object reference vulnerability in the setAssetLinks endpoint of AlarmResourceImpl. The realm access check validates only a single realm obtained via realms.stream().findFirst() on a HashSet of realms from the request, rather than all realms. This could allow an authenticated attacker to persist cross-tenant links and disclose victim asset names with roughly 50% probability per request.

Defensive priority

Authenticated attackers may be able to persist cross-tenant links and disclose victim asset names with roughly 50% probability per request.

Recommended defensive actions

• Verify OpenRemote version and apply patch 1.27.0 if vulnerable
• Restrict access to AlarmResourceImpl#setAssetLinks endpoint
• Monitor for suspicious alarm-asset link creation
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE description indicates that OpenRemote versions <= 1.26.2 contain an insecure direct object reference vulnerability in the setAssetLinks endpoint of AlarmResourceImpl. The realm access check validates only a single realm obtained via realms.stream().findFirst() on a HashSet of realms from the request, rather than all realms. To verify, defenders should review the official advisory and check for affected product deployments in managed environments.

Official resources