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CVE-2026-49444 n8n-io CVE debrief

CVE-2026-49444 is a high-severity vulnerability in the n8n workflow automation platform. 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 vulnerability is fixed in versions 1.123.48, 2.21.8, and 2.22.4. The vulnerability has a CVSS score of 7.1 and is considered high severity. The CVE was published on June 23, 2026, and last modified on June 26, 2026.

Vendor
n8n-io
Product
n8n
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-23
Original CVE updated
2026-06-26
Advisory published
2026-06-23
Advisory updated
2026-06-26

Who should care

Users of the n8n workflow automation platform should be aware of this vulnerability and take steps to mitigate it. Specifically, administrators of n8n installations should prioritize patching to versions 1.123.48, 2.21.8, or 2.22.4 to prevent potential code execution. This vulnerability requires authentication and specific permissions, but could still have significant impacts if exploited.

Technical summary

The n8n workflow automation platform has a vulnerability that allows authenticated users with specific permissions to escape the sandbox in Python Code Nodes and execute arbitrary code on the task runner container. The issue arises from insufficient sandboxing in the Python Code Node. Successful exploitation requires the attacker to have permission to create or modify workflows containing Python Code Nodes. The vulnerability is addressed in versions 1.123.48, 2.21.8, and 2.22.4 through improved sandboxing controls. The CVSS v4.0 vector for this vulnerability is AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

Defensive priority

Patching to fixed versions is the primary recommended action. Administrators should ensure that only authorized users have the necessary permissions to create or modify workflows with Python Code Nodes.

Recommended defensive actions

  • Patch n8n installations to versions 1.123.48, 2.21.8, or 2.22.4.
  • Review and limit permissions for users who can create or modify workflows with Python Code Nodes.
  • Monitor workflow execution logs for suspicious activity.
  • Consider implementing additional compensating controls such as network segmentation or stricter access controls.
  • Regularly review and update workflows to ensure they do not contain malicious code.

Evidence notes

The CVE and NVD provide official details on this vulnerability. The CVE record and NVD entry both confirm the existence and details of CVE-2026-49444. A vendor advisory from GitHub also provides mitigation information.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-49444 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-49444

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-49444 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-49444

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.