Research-CVE-2026-21858

CVE-2026-21858 Ni8mare: n8n Authentication Bypass & Remote Code Execution 1. OverviewVulnerability Name: Ni8mare CVE ID: CVE-2026-21858 CVSS Score: 10.0 Critical Vulnerability Type: Authentication Bypass, Local File Inclusion LFI, Remote Code Execution RCE Affected Versions: n8n versions 1.65.0 a...

CVE-2026-15054 Bit Form < 3.1.2 - Unauthenticated Inactive Form Submission

The Bit Form WordPress plugin before 3.1.2 does not enforce a form's active/published status on its public form-submission handlers, allowing unauthenticated users to submit entries to, and fire the configured workflows such as email notifications of forms the site owner has deactivated or...

EUVD-2026-46161

The Bit Form WordPress plugin before 3.1.0 does not properly validate its workflow-trigger token once the associated transient has expired, allowing unauthenticated attackers to re-trigger a form's configured workflow actions such as notification emails and integrations...

Improper Access Control

n8n is vulnerable to Improper Access Control. The vulnerability is due to insecure handling of form-based workflows, which allows an unauthenticated attacker to access files on the underlying server and expose sensitive system information...

CVE-2026-21858

n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker,...

CVE-2026-21858

n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker,...

CVE-2026-21858 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling

n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker,...

CVE-2026-21858

CVE-2026-21858 (n8n) affects n8n versions starting from 1.65.0 up to and including 1.120.x. The root cause is an inadequate input validation in form-based workflow processing, leading to Content-Type confusion that enables an unauthenticated attacker to read arbitrary server files and potentially...

PT-2026-1662

Name of the Vulnerable Software and Affected Versions n8n versions 1.65.0 through 1.120.x Description A critical issue in the workflow automation platform allows unauthenticated remote attackers to gain full control over self-hosted instances. The flaw stems from a Content-Type mismatch in how th...