RCE in n8n Merge node "Combine by SQL" mode
CVE-2026-33660 is a critical authenticated remote code execution vulnerability in n8n, an open-source workflow automation platform. The flaw affects the Merge node when configured in "Combine by SQL" mode, which uses AlaSQL. In affected versions prior to 2.14.1, 2.13.3, and 1.123.26, the AlaSQL sandbox does not sufficiently restrict certain SQL statements, enabling a sandbox escape / code injection condition from attacker-controlled workflow input. An authenticated user with permission to create or modify workflows can abuse this weakness to read local files from the n8n host and escalate to arbitrary code execution on the underlying server, potentially leading to full compromise of the instance.
Are you exposed to this one?
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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 measures reduce exposure but do not fully remediate the vulnerability; vendor-fixed versions are required for complete remediation.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
8 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.