Description
SiYuan before v3.7.4 contains a cross-site scripting vulnerability in the file upload validation flow that fails to escape filenames before inserting them into HTML via insertAdjacentHTML. Attackers can craft a malicious filename containing script payloads that execute with full OS command access when a user drags, drops, or pastes the file into the editor.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| siyuan-note | siyuan | < 3.7.4 | 3.7.4 |
References
- GitHub Security Advisory (GHSA-jf56-jrhq-j2qp) vendor-advisory
- VulnCheck Advisory: SiYuan before v3.7.4 XSS-to-RCE via malicious filename upload third-party-advisory