This Week in Spring - May 5th, 2026

Hi, Spring fans! Welcome to another installment of This Week in Spring! It's May 5th, 2026, and I'm in Mainz, Germany, for the legendary JAX conference! It's been infinitely far too long since I've been at this amazing show, and I'm oh-so happy to be back here! Tonight, after my two talks here, I...

Insufficiently Protected Credentials

Overview Affected versions of this package are vulnerable to Insufficiently Protected Credentials via the logging process. An attacker can obtain sensitive artifact repository credentials by accessing workflow pod logs. This is only exploitable if the attacker has Kubernetes RBAC permissions to...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the JoinWorkflowSpec process. An attacker can gain unauthorized access to host networking, override service account assignments, modify pod security contexts, add tolerations, or enable service account token...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the JoinWorkflowSpec process. An attacker can gain unauthorized access to host networking, override service account assignments, modify pod security contexts, add tolerations, or enable service account token...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the JoinWorkflowSpec process. An attacker can gain unauthorized access to host networking, override service account assignments, modify pod security contexts, add tolerations, or enable service account token...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the JoinWorkflowSpec process. An attacker can gain unauthorized access to host networking, override service account assignments, modify pod security contexts, add tolerations, or enable service account token...

Argo has incomplete fix for CVE-2026-31892: hostNetwork, securityContext, serviceAccountName bypass templateReferencing Strict/Secure

The fix for CVE-2026-31892 commit 534f4ff blocks podSpecPatch when templateReferencing: Strict is active, but doesn't restrict other WorkflowSpec fields that flow through the same merge path and get applied to pods. A user can set hostNetwork: true, override serviceAccountName, or change...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the JoinWorkflowSpec process. An attacker can gain unauthorized access to host networking, override service account assignments, modify pod security contexts, add tolerations, or enable service account token...

GHSA-3775-99MW-8RP4 Argo has incomplete fix for CVE-2026-31892: hostNetwork, securityContext, serviceAccountName bypass templateReferencing Strict/Secure

The fix for CVE-2026-31892 commit 534f4ff blocks podSpecPatch when templateReferencing: Strict is active, but doesn't restrict other WorkflowSpec fields that flow through the same merge path and get applied to pods. A user can set hostNetwork: true, override serviceAccountName, or change...

CVE-2026-42234

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an authenticated user with permission to create or modify workflows containing a Python Code Node could escape the sandbox and achieve arbitrary code execution on the task runner container. This...

CVE-2026-42228

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /chat WebSocket endpoint used by the Chat Trigger node's Hosted Chat feature did not verify that an incoming connection was authorized to interact with the target execution. An unauthenticated...

EUVD-2026-27113

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the fix for GHSA-f3f2-mcxc-pwjx did not cover the Snowflake node or the legacy MySQL v1 node. Both nodes construct SQL queries by directly interpolating user-controlled table names, column names, a...

CVE-2026-42235 n8n: XSS via MCP OAuth client

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an unauthenticated attacker could register a malicious MCP OAuth client with a crafted clientname. If a victim user authorized the OAuth consent dialog and a second user subsequently revoked that...

CVE-2026-42233 n8n: SQL Injection in Oracle Database Node via Limit Field

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, a flaw in the Oracle Database node's select operation allowed user-controlled input passed into the Limit field via expressions to be interpolated directly into the SQL query without sanitization o...

EUVD-2026-27096

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /chat WebSocket endpoint used by the Chat Trigger node's Hosted Chat feature did not verify that an incoming connection was authorized to interact with the target execution. An unauthenticated...

CVE-2026-42228

n8n (open source workflow automation) has a vulnerability in the /chat WebSocket endpoint used by the Chat Trigger node’s Hosted Chat feature. The issue: an unauthenticated attacker could attach to a workflow execution in a waiting state without verifying authorization, receive the pending prompt...

CVE-2026-42228 n8n: Hijacking of Unauthenticated Chat Execution

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /chat WebSocket endpoint used by the Chat Trigger node's Hosted Chat feature did not verify that an incoming connection was authorized to interact with the target execution. An unauthenticated...

CVE-2026-42226 n8n: Credential Authorization Bypass in dynamic-node-parameters Allows Foreign API Key Replay

n8n is an open source workflow automation platform. Prior to versions 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An authenticated user with access to a shared workflow could supp...

PT-2026-36907

Name of the Vulnerable Software and Affected Versions n8n versions prior to 1.123.32 n8n versions prior to 2.17.4 n8n versions prior to 2.18.1 Description An open source workflow automation platform contains an issue where the Snowflake node and the legacy MySQL v1 node construct SQL queries by...

PT-2026-37194

Name of the Vulnerable Software and Affected Versions Argo Workflows versions prior to 3.7.14 Argo Workflows versions prior to 4.0.5 Description A user with create Workflow permission can bypass the templateReferencing: Strict and Secure restrictions. This occurs because the system only blocks th...