by Kastro
Paper/Archive/CVE-2026-62853

CVE-2026-62853

mqttsnet thinglinks — ThingLinks vulnerable to authenticated remote code execution via Groovy script registration in ThingLinks

CVSS 9.9
critical.is priorityof 100
30
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0No EPSS score.000 × 200.0No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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 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.

Affected

ProductAffectedFixed inSource
thinglinks< 1.4.0–CNA

Scores by source

GitHub_M (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

refgithub.com/mqttsnet/thinglinks/security/advisories/GHSA-9vph-5ccx-qp9vrefgithub.com/mqttsnet/thinglinks/commit/311ee760dad798f48652722989fcea02349e13a3refgithub.com/mqttsnet/thinglinks/releases/tag/v1.4.0