CVE-2026-55413: Tooljet

Critical severity, CVSS 9.4. EPSS: 0.4% chance of exploitation in the next 30 days.

ToolJet is the open-source foundation am AI-native platform for building and deploying internal tools, workflows and AI agents. Prior to 3.20.178-lts, any authenticated user with builder role (free tier) can overwrite a globally-shared marketplace plugin with arbitrary JavaScript that executes server-side with full Node.js access (require, process). The malicious code runs whenever any user on the instance triggers a query using that plugin — achieving both RCE and supply-chain compromise of the entire ToolJet deployment. This vulnerability is fixed in 3.20.178-lts.

Affected products

• Tooljet Tooljet: before 3.20.178-lts (fixed in 3.20.178-lts)

Published 2026-06-25. Last modified 2026-06-25.