RCE in n8n Merge node SQL query mode
CVE-2026-27497 is a critical vulnerability in n8n, the open source workflow automation platform. In n8n versions prior to 2.10.1, 2.9.3, and 1.123.22, an authenticated user who has permission to create or modify workflows can abuse the Merge node when it is used in SQL query mode to execute arbitrary code on the n8n server and write arbitrary files to the server filesystem. The issue is specifically tied to the Merge node's SQL query mode and affects both self-hosted and cloud deployments according to the provided context.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
n8n-nodes-base.merge to the NODES_EXCLUDE environment variable. These are temporary risk-reduction measures only and do not fully remediate the vulnerability.Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.