CVE-2026-13221

A flaw was found in Perl. When the Perl regular expression engine processes patterns with a very large number of alternative fixed strings, an internal data field can overflow. This leads to silently incorrect regular expression matches, causing the engine to either match strings it should not...

CVE-2026-72769

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in th...

CVE-2026-72769

n8n versions before 1.123.67 , 2.31.5 , and 2.32.1 are affected by a prototype pollution vulnerability in the VM expression engine . An authenticated user who can create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute ...

EUVD-2026-56095

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in th...

CVE-2026-72769 n8n before 1.123.67 Prototype Pollution via VM Expression Engine

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in th...

CVE-2026-72769 n8n before 1.123.67 Prototype Pollution via VM Expression Engine

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in th...

CVE-2026-72769 n8n before 1.123.67 Prototype Pollution via VM Expression Engine

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in th...

CVE-2026-72769

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in th...

CVE-2026-72769: Improperly Controlled Modification of Object Prototype Attributes

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in th...

PT-2026-70171

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in th...

Exploit for Expression Language Injection in N8N

CVE-2026-65591 Name of the Vulnerable Software and Affected Ve...

CVE-2026-15534

Perl versions through 5.45.1 are vulnerable to out-of-bounds heap reads and writes during regular expression matching. The root cause is a positive overflow of a signed 32-bit count in the regex engine's superlinear cache within S_regmatch . Specifically, when matching a large subject against a p...

DEBIAN-CVE-2026-68499

re2 provides Node.js bindings for Google's RE2 regular expression engine. Prior to 1.25.2, re2's String.prototype.match implementation with a global RE2 pattern that can match the empty string fails to advance its native matching cursor in lib/match.cc, causing an infinite loop and unbounded nati...

CVE-2026-68499

CVE-2026-68499 concerns the re2 Node.js bindings. Affected component is the String.prototype.match implementation in re2 when using a global RE2 pattern that can match the empty string. The underlying issue is that the native matching cursor is not advanced in lib/match.cc, causing an infinite lo...

Prototype Pollution

Overview n8n-core is a Core functionality of n8n Affected versions of this package are vulnerable to Prototype Pollution in the expression engine. An attacker can cause the application to become unresponsive or crash by manipulating array-element access to obtain a reference to a host built-in an...

GHSA-HX4H-VR3M-45VH n8n: Prototype Pollution via VM Expression Engine Sandbox Escape Leads to Denial of Service

Impact An authenticated user able to create or edit a workflow expression could abuse the expression engine's array-element access to obtain a reference to a host built-in and pollute its prototype in the main n8n process, leading to a denial of service. Both self-hosted and cloud instances runni...

GHSA-PM35-FQVH-CQ5G n8n: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution

Impact The legacy expression evaluator's computed-member sanitizer can be bypassed by an authenticated user with workflow create or modify permissions. Successful exploitation grants the attacker host-level code execution as the n8n process. The legacy expression engine is the default engine in...

GHSA-Q3J5-8VRG-4P9Q n8n: Shared Credential Header Leak via HTTP Request Pagination Expression

Impact An authenticated member with use-only editor access to a shared workflow could read credential-populated headers exposed via the $request object inside an HTTP Request node's pagination expression. When an HTTP Header Auth credential is applied to a paginated request, the secret is present...

CVE-2026-65591 n8n before 1.123.64 Sanitizer Bypass Remote Code Execution

n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legac...

CVE-2026-44632 Yamcs: Server-Side Code Injection (RCE) via Janino Expression Engine in `JavaExprAlgorithmExecutionFactory`

Yamcs is a mission control framework. Prior to 5.12.7, a server-side code injection vulnerability existed in the Yamcs algorithm evaluation engine org.yamcs.algorithms.JavaExprAlgorithmExecutionFactory, which dynamically compiled and evaluated user-controlled algorithm text through the Janino...