What is CVE-2026-39842?

CVE-2026-39842 is a critical-severity vulnerability in Openremote, classified under Code Injection. CVSS score: 10.0/10. Published 2026-04-14.

How severe is CVE-2026-39842?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2026-39842 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Openremote

CVE-2026-39842

OpenRemote is an open-source IoT platform. Versions 1.21.0 and below contain two interrelated expression injection vulnerabilities in the rules engine that allow arbitrary code execution on the server. The JavaScript rules engine executes…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.001 (23.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Openremote — versions < 1.22.0

Weakness classification (CWE)

Public proof-of-concept exploits

keraattin/CVE-2026-39842

References

https://github.com/openremote/openremote/security/advisories/GHSA-7mqr-33rv-p3mp (x_refsource_CONFIRM)
https://github.com/openremote/openremote/releases/tag/1.22.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-39842?: CVE-2026-39842 is a critical-severity vulnerability in Openremote, classified under Code Injection. CVSS score: 10.0/10. Published 2026-04-14.
How severe is CVE-2026-39842?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2026-39842 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.