CVE-2026-73041

critical · 9.4

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.

9.4

CVSS

0.4%

EPSS (exploit prob.)

35th

EPSS percentile

2026-08-15

Published

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-79

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-fqpw-c3pj-w8g9
https://www.vulncheck.com/advisories/siyuan-before-remote-code-execution-via-pdf-annotations
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-fqpw-c3pj-w8g9

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-73041