Expression-Sandbox-Escape-Simulation-Lab

🧪 Expression Sandbox Escape – Simulation Lab A minimal experimental environment for demonstrating JavaScript expression sandbox escape and patch evolution. Through multiple versions of the sandbox, it implements the progression from: Fully escapable → patching this → then patching destructuring...

n8n 2.38.1 Expression Sandbox Escape

n8n versions prior to 1.123.76, versions 2.0.0 through 2.37.6, and versions 2.38.0 through 2.38.1 contain an expression sandbox escape that can lead to code execution by an authenticated workflow editor. https://packetstorm.news/download/237472...

Weird Machine Compositors: Exploiting AI Orchestration at the Expression Layer

Orchestration platforms secure user-provided expressions through enumerate and block sandboxing: AST rewriting, runtime property blocklists, template sandbox environments. We demonstrate that these sandboxes are weird machines whose instruction set is the underlying language specification, and th...

CVE-2026-85165

n8n versions before 2.36.2 contain an expression sandbox bypass vulnerability where free identifiers in spread, computed-key, switch-case, or class-extension positions resolve against process globals. Authenticated users with workflow-edit permission can mutate host objects through expression...

EUVD-2026-70400

n8n versions before 2.36.2 contain an expression sandbox bypass vulnerability where free identifiers in spread, computed-key, switch-case, or class-extension positions resolve against process globals. Authenticated users with workflow-edit permission can mutate host objects through expression...

CVE-2026-85169: Improper Control of Generation of Code

n8n versions before 1.123.73, 2.35.4, and 2.36.2 contain an expression sandbox escape in the $fromAI handler. $fromAI resolved a caller-supplied placeholder name without requiring it to be an own property and admitted reserved keys; against a primitive input value it returned a live host-prototyp...

CVE-2026-85165: Improper Neutralization of Directives in Dynamically Evaluated Code

n8n versions before 2.36.2 contain an expression sandbox bypass vulnerability where free identifiers in spread, computed-key, switch-case, or class-extension positions resolve against process globals. Authenticated users with workflow-edit permission can mutate host objects through expression...

PT-2026-84997

n8n versions before 2.36.2 contain an expression sandbox bypass vulnerability where free identifiers in spread, computed-key, switch-case, or class-extension positions resolve against process globals. Authenticated users with workflow-edit permission can mutate host objects through expression...

CVE-2026-19135

A JEXL expression sandbox bypass exists in multiple versions of OpenNMS Meridian and Horizon. A low-privileged authenticated user can submit a crafted expression to the Measurements REST API that escapes the sandbox and loads arbitrary Java classes on the server. This can potentially allow an...

CVE-2026-72765 n8n before 2.32.1 Remote Code Execution via Expression Sandbox Escape

n8n before 2.31.5 and before 2.32.1 contain a sandbox escape vulnerability in expression evaluation. An authenticated user with permission to create or modify workflows can craft expressions using arrow-function bodies to bypass the expression sandbox, triggering system command execution on the...

EUVD-2026-54519

Nexus Repository 3 did not fully sandbox JEXL expressions used in Content Selectors. An account holding the nexus:selectors:create permission could construct an expression that read Java object properties not intended to be exposed to the expression engine, disclosing internal JVM class metadata...

GHSA-GV7G-JM28-CR3M n8n: Expression sandbox escape via arrow-function bodies enabling command execution

Impact An authenticated user with permission to create or modify workflows could abuse crafted expressions using arrow functions to bypass the expression sandbox, triggering unintended system command execution on the host running n8n. Patches The issue has been fixed in n8n versions 2.31.5 and...

NPM: n8n: Expression sandbox escape via arrow-function bodies enabling command execution

NPM: n8n: Expression sandbox escape via arrow-function bodies enabling command execution vulnerability discovered by ? in WordPress Npm n8n versions 2.31.5...

PT-2026-67360

Impact An authenticated user with permission to create or modify workflows could abuse crafted expressions using arrow functions to bypass the expression sandbox, triggering unintended system command execution on the host running n8n. Patches The issue has been fixed in n8n versions 2.31.5 and...

CVE-2026-27577

CVE-2026-27577 concerns n8n’s expression evaluation in workflow parameters, enabling remote code execution when an authenticated user with workflow edit rights crafts expressions. The issue is the expression sandbox escape leading to unintended host command execution. Affected releases are before...

CVE-2026-27577 n8n: Expression Sandbox Escape Leads to RCE

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, additional exploits in the expression evaluation of n8n have been identified and patched following CVE-2025-68613. An authenticated user with permission to create or modify workflows could abuse...

CVE-2026-27577 n8n: Expression Sandbox Escape Leads to RCE

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, additional exploits in the expression evaluation of n8n have been identified and patched following CVE-2025-68613. An authenticated user with permission to create or modify workflows could abuse...

EUVD-2026-8761

n8n: Expression Sandbox Escape Leads to RCE...

n8n: Expression Sandbox Escape Leads to RCE

Impact Additional exploits in the expression evaluation of n8n have been identified and patched following CVE-2025-68613. An authenticated user with permission to create or modify workflows could abuse crafted expressions in workflow parameters to trigger unintended system command execution on th...

CVE-2026-1470

CVE-2026-1470 affects n8n: a critical Remote Code Execution in the workflow Expression evaluation system where expressions from authenticated users are evaluated in a runtime context that isn’t sufficiently isolated. This allows an authenticated attacker to execute arbitrary code with the n8n pro...