What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-01 · updated 2026-10-08
• Weakness: CWE-863

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

• openremote: before 1.27.0 — fixed in 1.27.0

How to fix

Upgrade to a fixed version: openremote 1.27.0. Check the vendor advisory for mitigations.

References

• https://github.com/openremote/openremote/security/advisories/GHSA-q2gm-frx3-2qjr
• https://www.vulncheck.com/advisories/openremote-before-cross-tenant-idor-via-setassetlinks

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