{"id":"CVE-2026-67310","summary":"openremote before 1.27.0 Cross-Tenant IDOR via setAssetLinks","details":"OpenRemote (org.openremote:openremote) versions \u003c= 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.","aliases":["GHSA-q2gm-frx3-2qjr"],"modified":"2026-08-03T03:30:24.642996831Z","published":"2026-08-01T12:22:17.959Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-863"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67310.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67310.json"},{"type":"ADVISORY","url":"https://github.com/openremote/openremote/security/advisories/GHSA-q2gm-frx3-2qjr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67310"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openremote-before-cross-tenant-idor-via-setassetlinks"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openremote/openremote","events":[{"introduced":"0"},{"fixed":"12396be6cc2bdd61c2a2d7df3aaf9d7f6baac79f"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.27.0"}],"source":"AFFECTED_FIELD"}}],"versions":["1.26.2","1.26.1","1.26.0","1.25.0","1.24.2","1.24.1","1.24.0","1.23.1","1.23.0","1.22.1","1.22.0","1.21.0","1.20.2","1.20.1","1.20.0","1.19.0","1.18.0","1.17.3","1.17.2","1.17.1","1.17.0","1.16.1","1.16.0","1.15.2","1.15.1","1.15.0","1.14.0","1.13.1","1.13.0","1.12.3","1.12.2","1.12.1","1.12.0","1.11.3","1.11.2","1.11.1","1.11.0","1.10.0","1.9.0","1.8.1","1.8.0","archive/console_loader","1.7.0","1.6.5","1.6.4","1.6.3","1.6.2","1.6.1","1.6.0","1.5.0","1.4.0","1.3.5","1.3.4","1.3.3","1.3.2","1.3.1","1.3.0","1.2.4","1.2.3","1.2.2","1.2.1","1.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67310.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"}]}