CVE-2026-63630

Summary

BentoPDF is a client-side PDF toolkit that is self hostable. In 2.8.6 and earlier, deserializeWorkflow() accepts the Timestamp node's tsaUrl control from imported JSON without schema or destination validation. When a user imports the crafted workflow and runs it against a PDF, timestampPdf() sends an RFC 3161 TimeStampReq containing the PDF's SHA-256 MessageImprint to the attacker-selected endpoint. The default self-hosted configuration does not set VITE_CORS_PROXY_URL, so the request bypasses the proxy's ALLOWED_TSA_HOSTS checks and is sent directly. The disclosed digest can confirm that a document matches a known file and can correlate the same document across users without revealing its contents. This vulnerability is fixed in 2.8.7.

Affected Software

VendorProductVersion RangeStatus
alam00000bentopdf< 2.8.7affected

Weaknesses

  • CWE-502: CWE-502: Deserialization of Untrusted Data
  • CWE-201: CWE-201: Insertion of Sensitive Information Into Sent Data

References