CVE-2026-26078: Authorization Bypass Through User-Controlled Key

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, when the patreonwebhooksecret site setting is blank, an attacker can forge valid webhook signatures by computing an HMAC-MD5 with an empty string as the key. Since the request body is known to th...

CVE-2026-25741: Incorrect Authorization

Zulip is an open-source team collaboration tool. Prior to commit bf28c82dc9b1f630fa8e9106358771b20a0040f7, the API endpoint for creating a card update session during an upgrade flow was accessible to users with only organization member privileges. When the associated Stripe Checkout session is...

PT-2026-23961

Impact An attacker who knows the webhook URL of a workflow using the GitHub Webhook Trigger node could send unsigned POST requests and trigger the workflow with arbitrary data. The node did not implement the HMAC-SHA256 signature verification that GitHub provides to authenticate webhook deliverie...

PT-2026-51415

Name of the Vulnerable Software and Affected Versions n8n versions prior to 1.123.15 n8n versions prior to 2.5.0 Description The GitHub Webhook Trigger node fails to implement HMAC-SHA256 signature verification, which is a mechanism used to authenticate that a webhook delivery actually comes from...

CVE-2026-26077: Improper Authentication

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, several webhook endpoints SendGrid, Mailjet, Mandrill, Postmark, SparkPost in the WebhooksController accepted requests without a valid authentication token when no token was configured. This...

Discourse 授权问题漏洞

Discourse is an open-source community discussion platform developed by Discourse. This platform includes features such as communities, email communication, and chat rooms. Versions of Discourse before 2025.12.2, 2026.1.1, and 2026.2.0 have vulnerabilities related to authorization. These...

CVE-2026-27578

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, an authenticated user with permission to create or modify workflows could inject arbitrary scripts into pages rendered by the n8n application using different techniques on various nodes Form Trigger...

GO-2026-4547 OliveTin: OS Command Injection via `password` argument type and webhook JSON extraction bypasses shell safety checks in github.com/OliveTin/OliveTin

OliveTin: OS Command Injection via password argument type and webhook JSON extraction bypasses shell safety checks in github.com/OliveTin/OliveTin...

CVE-2026-27578

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, an authenticated user with permission to create or modify workflows could inject arbitrary scripts into pages rendered by the n8n application using different techniques on various nodes Form Trigger...

CVE-2026-27578 n8n Vulnerable to Stored XSS via Various Nodes

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, an authenticated user with permission to create or modify workflows could inject arbitrary scripts into pages rendered by the n8n application using different techniques on various nodes Form Trigger...

CVE-2026-27578

Summary of CVE-2026-27578 (n8n): An authenticated user with permission to create or modify workflows could inject arbitrary scripts into pages rendered by n8n across multiple nodes (Form Trigger, Chat Trigger, Send & Wait, Webhook, Chat Node). This leads to client-side script execution in other u...

CVE-2026-27578 n8n Vulnerable to Stored XSS via Various Nodes

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, an authenticated user with permission to create or modify workflows could inject arbitrary scripts into pages rendered by the n8n application using different techniques on various nodes Form Trigger...

Cross-site Scripting (XSS)

Overview @n8n/n8n-nodes-langchain is a Affected versions of this package are vulnerable to Cross-site Scripting XSS via the workflow creation and editing process in various nodes, including Form Trigger, Chat Trigger, Send & Wait, Webhook, and Chat nodes. An attacker can execute arbitrary scripts...

Cross-site Scripting (XSS)

Overview n8n-nodes-base is a Base nodes of n8n Affected versions of this package are vulnerable to Cross-site Scripting XSS via the workflow creation and editing process in various nodes, including Form Trigger, Chat Trigger, Send & Wait, Webhook, and Chat nodes. An attacker can execute arbitrary...

GHSA-2P9H-RQJW-GM92 n8n Vulnerable to Stored XSS via Various Nodes

Impact An authenticated user with permission to create or modify workflows could inject arbitrary scripts into pages rendered by the n8n application using different techniques on various nodes Form Trigger node, Chat Trigger node, Send & Wait node, Webhook Node, and Chat Node. Scripts injected by...

OliveTin: OS Command Injection via `password` argument type and webhook JSON extraction bypasses shell safety checks

Summary OliveTin's shell mode safety check checkShellArgumentSafety blocks several dangerous argument types but not password. A user supplying a password-typed argument can inject shell metacharacters that execute arbitrary OS commands. A second independent vector allows unauthenticated RCE via...

EUVD-2026-8600

OliveTin: OS Command Injection via password argument type and webhook JSON extraction bypasses shell safety checks...

GHSA-49GM-HH7W-WFVF OliveTin: OS Command Injection via `password` argument type and webhook JSON extraction bypasses shell safety checks

Summary OliveTin's shell mode safety check checkShellArgumentSafety blocks several dangerous argument types but not password. A user supplying a password-typed argument can inject shell metacharacters that execute arbitrary OS commands. A second independent vector allows unauthenticated RCE via...

CVE-2026-27626

A flaw was found in OliveTin. This vulnerability allows an authenticated user to inject shell metacharacters through password-typed arguments, leading to arbitrary operating system command execution. Additionally, an unauthenticated attacker can achieve Remote Code Execution RCE by sending...

Command Injection

Overview Affected versions of this package are vulnerable to Command Injection via the password argument type and webhook JSON extraction bypassing shell safety checks. An attacker can execute arbitrary operating system commands by supplying crafted input to the password argument or by sending...