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CRITICAL

CVE-2026-93985

OpenPanel js-runtime JavaScript Template Sandbox Escape RCE

CVSS v3

9.9

CRITICAL

EPSS Score

0.7 %

exploit probability, as of 2026-09-28

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

OpenPanel js-runtime through commit bad75bdd contains a sandbox escape vulnerability in the JavaScript webhook template validator that fails to block computed member access to constructor chains. Attackers with project write access can create webhook templates using computed property notation to access Function constructor and execute arbitrary code in the worker process.

Technical details

Published
2026-09-19
Last Modified
2026-09-19

Frequently asked questions

What is CVE-2026-93985?

OpenPanel js-runtime through commit bad75bdd contains a sandbox escape vulnerability in the JavaScript webhook template validator that fails to block computed member access to constructor chains. Attackers with project write access can create webhook templates using computed property notation to access Function constructor and execute arbitrary code in the worker process.

Is CVE-2026-93985 actively exploited?

Active exploitation of CVE-2026-93985 has not been confirmed. Its EPSS score was 0.7% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-93985?

CVE-2026-93985 has a CVSS v3 base score of 9.9 (CRITICAL severity).

Is CVE-2026-93985 affecting your environment?

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