n8n Warns of CVSS 10.0 RCE Vulnerability Affecting Self-Hosted and Cloud Versions

The Hacker News

January 7, 2026 at 11:26 AM

Overview

The open-source workflow automation platform n8n has alerted users to a serious security vulnerability, identified as CVE-2026-21877, which carries a CVSS score of 10.0. This flaw could allow authenticated users to execute untrusted code remotely, posing a significant risk to both self-hosted and cloud versions of the software. Users and organizations utilizing n8n need to be aware of this vulnerability as it could lead to unauthorized access and potential data breaches. The company recommends that affected users take immediate action to secure their systems. As of now, the specific details regarding patches or updates have not been disclosed, but users should monitor official channels for further instructions.

Key Takeaways

Affected Systems: n8n self-hosted versions, n8n cloud versions
Action Required: Users should monitor for updates from n8n regarding patches or mitigation strategies.
Timeline: Newly disclosed

Original Article Summary

Open-source workflow automation platform n8n has warned of a maximum-severity security flaw that, if successfully exploited, could result in authenticated remote code execution (RCE). The vulnerability, which has been assigned the CVE identifier CVE-2026-21877, is rated 10.0 on the CVSS scoring system. "Under certain conditions, an authenticated user may be able to cause untrusted code to be

Impact

n8n self-hosted versions, n8n cloud versions

Exploitation Status

The exploitation status is currently unknown. Monitor vendor advisories and security bulletins for updates.

Timeline

Newly disclosed

Remediation

Users should monitor for updates from n8n regarding patches or mitigation strategies. It's advisable to restrict access to the n8n platform and review user permissions as a precaution.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Vulnerability, RCE.

Read Original Article

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