CVE-2026-63630
3.4 · LOWBentoPDF is a client-side PDF toolkit that is self hostable.
Overview
CVE-2026-63630 is a low-severity vulnerability. It was published on September 24, 2026 and has a CVSS 3.1 base score of 3.4 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.4, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
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Frequently asked questions
What is CVE-2026-63630?
CVE-2026-63630 is a low-severity vulnerability. It was published on September 24, 2026 and has a CVSS 3.1 base score of 3.4 (LOW).
How severe is CVE-2026-63630?
This vulnerability has a CVSS 3.1 base score of 3.4, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-63630?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-63630?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-63630 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
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