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...

Server-side Request Forgery (SSRF)

Overview n8n is a n8n Workflow Automation Tool Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the /rest/dynamic-node-parameters/ endpoint due to insufficient authorization checks and the ability to supply an absolute URL in the routing configuration. An...

n8n: "Allowed HTTP Request Domains" Restriction Bypass via AI Agents MCP Connector

Impact The AI Agents feature did not enforce the "Allowed HTTP Request Domains" restriction configured on credentials. As a result, a member-level user who had been granted use-only access to a shared credential could cause its secret to be sent to an external server they control, by pointing an...

EUVD-2026-42612

n8n: Prototype Pollution via Workflow Credentials Leads to Unauthenticated User and Project Enumeration...

NPM: n8n: Prototype Pollution via Workflow Credentials Leads to Unauthenticated User and Project Enumeration

NPM: n8n: Prototype Pollution via Workflow Credentials Leads to Unauthenticated User and Project Enumeration vulnerability discovered by ? in WordPress Npm n8n versions 1.123.61...

GHSA-75QM-GP28-RCQ9 n8n: Prototype Pollution via Workflow Credentials Leads to Unauthenticated User and Project Enumeration

Impact An authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API. This can be leveraged to bypass authentication, allowing unauthenticated requests to be treated as a privileged user...

n8n: Prototype Pollution via Workflow Credentials Leads to Unauthenticated User and Project Enumeration

Impact An authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API. This can be leveraged to bypass authentication, allowing unauthenticated requests to be treated as a privileged user...

EUVD-2026-42613

n8n: Shared Credential Header Leak via HTTP Request Pagination Expression...

GO-2026-6044 Gitea: Permanent Fork PR Workflow Approval Gate Bypass in code.gitea.io/gitea

Gitea: Permanent Fork PR Workflow Approval Gate Bypass in code.gitea.io/gitea...

n8n: Stored DOM XSS via Resource Locator `cachedResultUrl`

Impact The Resource Locator passes the workflow-persisted cachedResultUrl to window.open without scheme validation. When a victim opens the crafted workflow and interact with external links, the JavaScript payload runs in the victim's browser. Patches The issue has been fixed in n8n versions...

Cross-site Scripting (XSS)

Overview n8n is a n8n Workflow Automation Tool Affected versions of this package are vulnerable to Cross-site Scripting XSS in the HTML preview, which renders execution output into an iframe srcdoc without the sandbox attribute. An attacker can execute arbitrary scripts in the context of the...

GHSA-H5XR-FQVJ-253P Duplicate Advisory: Stored DOM XSS via Resource Locator `cachedResultUrl`

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-9wcp-9r3j-383q. This link is maintained to preserve external references. Original Description n8n before 1.123.64, 2.29.8, and 2.30.1 contains a stored DOM cross-site scripting vulnerability in the Resource...

GHSA-H9FM-XCV2-QFW3 Duplicate Advisory: Unauthenticated Endpoint Allows Cancellation of Any User's Active Test Webhook

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-33q9-f52j-gc75. This link is maintained to preserve external references. Original Description n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoin...

GHSA-M7JC-P4HF-XHWQ Duplicate Advisory: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-pm35-fqvh-cq5g. This link is maintained to preserve external references. Original Description n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An...

GHSA-5VFW-JC4P-FJ39 Duplicate Advisory: Member-Level Users Can Execute Other Users' MCP Server Trigger Workflows via Missing OAuth Authorization Check

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-q5xf-xhwf-cwqf. This link is maintained to preserve external references. Original Description n8n before 2.29.8 and 2.30.x before 2.30.1 affected from 2.27.0, when the OAuth 2.1 consent and token-issuance flow w...

Duplicate Advisory: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-pm35-fqvh-cq5g. This link is maintained to preserve external references. Original Description n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An...

Duplicate Advisory: Member-Level Users Can Execute Other Users' MCP Server Trigger Workflows via Missing OAuth Authorization Check

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-q5xf-xhwf-cwqf. This link is maintained to preserve external references. Original Description n8n before 2.29.8 and 2.30.x before 2.30.1 affected from 2.27.0, when the OAuth 2.1 consent and token-issuance flow w...

CVE-2026-65591

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-2026-65594

n8n before 2.29.8 and 2.30.x before 2.30.1 affected from 2.27.0, when the OAuth 2.1 consent and token-issuance flow was introduced does not verify that the authenticated user has access to the workflow referenced as the OAuth resource. On instances with at least one active MCP Server Trigger...

CVE-2026-65014

n8n before 2.28.0 and before 2.27.4 on the 2.27.x branch registers the DELETE /$restEndpoint/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The...