---
id: "CVE-2026-62853"
kind: "vulnerability"
aliases: ["CVE-2026-62853"]
title: "ThingLinks IoT platform: authenticated users can run server code"
severity: "critical"
cvss: 9.9
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["groovy", "iot", "other", "rule-engine", "thinglinks"]
not_affected_if: ["version-1.4.0-or-later"]
published_at: "2026-10-30T21:17:14+00:00"
first_seen_at: "2026-10-30T21:25:53+00:00"
updated_at: "2026-10-30T21:26:27+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-62853", "first_seen_at": "2026-10-30T21:25:53+00:00"}]
---

# ThingLinks IoT platform: authenticated users can run server code

ThingLinks, an enterprise IoT platform, passes user-supplied Groovy script content to an unsandboxed compile-and-load step on the rule engine's script test and register endpoint. An authenticated attacker can run arbitrary code on the server.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed ThingLinks version; affected builds are those before `1.4.0`.
- Confirm whether the `/groovyScriptTest/registerScript` endpoint is reachable from outside your network.

## Fix

- Move to ThingLinks `1.4.0` or later.

## Timeline

- 2026-10-30T21:25:53+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-62853

## From the sources

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.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_