{"id":"CVE-2026-62853","title":"ThingLinks vulnerable to authenticated remote code execution via Groovy script registration in ThingLinks","summary":"ThingLinks is an enterprise IoT platform. Prior to 1.4.0, the `/groovyScriptTest/registerScript` endpoint accepts user-supplied Groovy script content and passes it to an unsandboxed `Groovy compilation and loading` flow. An authenticated…","severity":"critical","cvss":9.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-78","CWE-94"],"vendor":"mqttsnet","product":"thinglinks","affected":["thinglinks < 1.4.0"],"published":"2026-10-30","updated":"2026-10-30","sourceUpdated":"2026-10-30T20:28:07.829Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-62853","references":[{"url":"https://github.com/mqttsnet/thinglinks/security/advisories/GHSA-9vph-5ccx-qp9v","label":"https://github.com/mqttsnet/thinglinks/security/advisories/GHSA-9vph-5ccx-qp9v"},{"url":"https://github.com/mqttsnet/thinglinks/commit/311ee760dad798f48652722989fcea02349e13a3","label":"https://github.com/mqttsnet/thinglinks/commit/311ee760dad798f48652722989fcea02349e13a3"},{"url":"https://github.com/mqttsnet/thinglinks/releases/tag/v1.4.0","label":"https://github.com/mqttsnet/thinglinks/releases/tag/v1.4.0"}],"tags":["cve.org"],"epss":0.00406,"epssPercentile":0.35052,"ingestedAt":"2026-11-05T16:24:31.462Z","slug":"CVE-2026-62853","body":"## Overview\n\nThingLinks is an enterprise IoT platform. Prior to 1.4.0, the `/groovyScriptTest/registerScript` endpoint accepts user-supplied Groovy script content and passes it to an unsandboxed `Groovy compilation and loading` flow. An authenticated attacker can provide code that is compiled and instantiated on the server, resulting in arbitrary server-side code execution. The issue affects the `rule engine`'s Groovy script test/register flow. This issue is fixed in version 1.4.0.\n\n## Affected\n\n- `thinglinks < 1.4.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":54.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}