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Pompelmi

PDF upload security

PDF is not just a document container. It is a programmable format that often moves into previewers, OCR systems, and internal tooling.

Section titled “Recommended approach”
  • Give PDF uploads their own route or policy.
  • Inspect before storage.
  • Treat suspicious PDFs as review candidates when the business flow requires it.
  • Keep downstream PDF processing away from untrusted or unreviewed files.

Practical notes

Section titled “Practical notes”
  • A clean extension and application/pdf header are not enough.
  • Business portals often need quarantine, not only hard blocking.
  • Combine PDF rules with storage isolation and review-friendly logging.

Continue

Section titled “Continue”