Vulnerability · Published Aug 1, 2026 · Assigned by VulnCheck

CVE-2026-67310openremote before 1.27.0 Cross-Tenant IDOR via setAssetLinks

Medium 5.4

In plain English

A medium-severity incorrect authorization in openremote from openremote. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 84.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenRemote (org.openremote: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. Because HashSet iteration order is non-deterministic, an authenticated attacker who includes alarm-asset links from both their own realm and a victim realm can, with roughly 50% probability per request (retryable), persist cross-tenant links and disclose victim asset names (returned via @Formula fields) through GET requests on the attacker's own alarm. Fixed in 1.27.0.

Affected products (as reported)

Vendor	Product	Versions
openremote	openremote	0 – before 1.27.0

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References

GitHub Security Advisory (GHSA-q2gm-frx3-2qjr) vendor-advisory
VulnCheck Advisory: openremote before 1.27.0 Cross-Tenant IDOR via setAssetLinks third-party-advisory