CVE-2026-73041

Critical

Open

TLP:CLEAR

SiYuan before v3.7.4 Remote Code Execution via PDF Annotations

NVD CVE.org

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Description

SiYuan versions before v3.7.4 fail to validate or escape annotation fields written to disk by the setFileAnnotation endpoint. Attackers can inject malicious markup into annotation fields that execute as script in the PDF renderer with full Node.js access when a user opens an annotated PDF.

Details

CVSS Score: 9.4
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Confidence: 90%
Published: Aug 15, 2026
Last Modified: Aug 15, 2026

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