CVE-2026-62853

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

CRITICAL 9.9

CVSS 3.1Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HPublished: 2026-10-30 20:28 UTCUpdated: 2026-10-30 20:28 UTCAssigner: GitHub_M

Description

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.

CWE

Affected

mqttsnet thinglinks

References

https://github.com/mqttsnet/thinglinks/security/advisories/GHSA-9vph-5ccx-qp9vx_refsource_CONFIRM
https://github.com/mqttsnet/thinglinks/commit/311ee760dad798f48652722989fcea02349e13a3x_refsource_MISC
https://github.com/mqttsnet/thinglinks/releases/tag/v1.4.0x_refsource_MISC

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