Arbitrary File Write in n8n Merge Node SQL Query Mode
CVE-2026-25056 is a vulnerability in n8n, the open-source workflow automation platform, affecting the Merge node when used in SQL Query mode. In n8n versions prior to 1.118.0 and 2.4.0, an authenticated user with permission to create or modify workflows can abuse this functionality to write arbitrary files to the filesystem of the server running n8n. The available advisory information identifies the issue as an arbitrary file write condition in the Merge node’s SQL Query mode. Because the attacker can place files on the host filesystem in attacker-controlled locations, the issue can potentially be escalated to remote code execution depending on deployment specifics and writable target paths.
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Impact, mitigation & remediation
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Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
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Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Authenticated arbitrary file write via n8n Merge node (SQL Query mode), potentially leading to RCE on the n8n server.
Arbitrary file write via n8n Merge node (SQL Query mode) enabling potential RCE on the n8n server.
An authenticated arbitrary file write vulnerability in n8n (Merge node, SQL Query mode) that can potentially lead to remote code execution.
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.