Arbitrary Code Execution Vulnerability in ThingLinks IoT Platform
CVE-2026-62853

9.9CRITICAL

Key Information:

Vendor

MQttsnet

Status
Thinglinks
Vendor
CVE Published:
30 October 2026

What is CVE-2026-62853?

The ThingLinks IoT platform, prior to version 1.4.0, suffers from a significant vulnerability where the /groovyScriptTest/registerScript endpoint erroneously allows an authenticated user to submit Groovy script content without proper sandboxing. This design flaw enables an attacker to execute arbitrary server-side code, posing a serious risk to the integrity of the server and potentially compromising sensitive data. The vulnerability affects the rule engine's Groovy script test/register functionality and has been addressed in version 1.4.0.

Affected Version(s)

thinglinks < 1.4.0

References

https://github.com/mqttsnet/thinglinks/security/advisorie...
x_refsource_CONFIRM
https://github.com/mqttsnet/thinglinks/commit/311ee760dad...
x_refsource_MISC
https://github.com/mqttsnet/thinglinks/releases/tag/v1.4.0
x_refsource_MISC

CVSS V3.1

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.