n8n SSH Node Path Traversal to Arbitrary File Write
CVE-2026-25055 is a critical path traversal vulnerability in n8n affecting versions prior to 1.123.12 and 2.4.0. The issue occurs when workflows accept uploaded files, such as via unauthenticated webhook/file-upload endpoints, and then transfer those files to remote systems using the SSH node without validating file metadata. An attacker can supply traversal sequences such as ../ in metadata so that the SSH transfer writes the file to an unintended path on the remote SSH-accessible system rather than the expected destination. This creates an arbitrary file write primitive on the remote target and can be escalated to remote code execution depending on where files can be written, such as authorized_keys, cron.d, or systemd service locations.
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Impact
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Mitigation
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Exploits
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No public exploit code observed for this vulnerability.
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Recent activity
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A critical path traversal issue in n8n where unvalidated uploaded-file metadata passed from the Webhook node to the SSH node can allow ../ sequences to write files to arbitrary paths on remote SSH targets, potentially enabling RCE by writing to locations like authorized_keys, cron.d, or systemd service files.
Path traversal in n8n workflows involving SSH node file transfers allowing writes to unintended locations on remote systems, potentially leading to RCE on those remote systems.
Path traversal in n8n SSH node file-transfer handling allowing writes to unintended locations on remote systems, potentially enabling RCE on those remote targets.
The version that knows your environment.
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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.
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