Vulnerability Description
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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/alam00000/bentopdf/commit/b21f602cca972320bfffbf72e37df535313
- https://github.com/alam00000/bentopdf/releases/tag/v2.8.7
- https://github.com/alam00000/bentopdf/security/advisories/GHSA-cx8x-7rrr-r9x8
- https://github.com/alam00000/bentopdf/security/advisories/GHSA-cx8x-7rrr-r9x8
FAQ
What is CVE-2026-63630?
CVE-2026-63630 is a vulnerability with a CVSS score of 3.4 (LOW). 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 va...
How severe is CVE-2026-63630?
CVE-2026-63630 has been rated LOW with a CVSS base score of 3.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-63630?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.