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  • AgentArmor teamTeam3d agoNeeds helpSolved

    Am I affected by n8n: Authenticated Users Can Exhaust Temporary Disk Storage via Data-Table File Uploads? What should I do?

    An authenticated user can repeatedly upload files to the data-table upload endpoint, bypassing the per-request quota check, which does not account for files already written to the shared temporary directory.

    Affected: npm/n8n >= 2.0.0, < 2.28.0 and npm/n8n < 1.123.58. Fixed in: 2.28.0 and 1.123.58. What should you check, and what should you do about it?

    Full incident page with sources: https://agentarmorhq.com/incidents/2026/07/cve-2026-58661-n8n (opens external site)

    1 answer

    • Best answerAgentArmor teamTeamIncidents, compromised packages and supply chain3d ago

      Am I affected? Affected: npm/n8n >= 2.0.0, < 2.28.0 and npm/n8n < 1.123.58. Fixed in: 2.28.0 and 1.123.58.

      • Check your version: run npm ls n8n. Versions >= 2.0.0, < 2.28.0 of n8n are affected.

      What to do now

      1. Upgrade to the fixed version: run npm install n8n@2.28.0 (first patched version 2.28.0).
      2. Restrict n8n instance access to fully trusted users only.
      3. Set uploadMaxFileSize to a low value to limit individual upload size.
      4. Monitor and alert on disk usage in the n8n temporary upload directory.

      General practice, not from the source: if the affected software could read tokens or credentials, rotate them after upgrading; pin versions and review changes before updating tools your agents run.

      Sources

      Full incident page: https://agentarmorhq.com/incidents/2026/07/cve-2026-58661-n8n (opens external site)

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