CVE-2024-55659: SiYuan has an arbitrary file write in the host via /api/asset/upload

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-12-12 · updated 2026-06-17
Weakness: CWE-22

Description

SiYuan is a personal knowledge management system. Prior to version 3.1.16, the `/api/asset/upload` endpoint in Siyuan is vulnerable to both arbitrary file write to the host and stored cross-site scripting (via the file write). Version 3.1.16 contains a patch for the issue.

Affected products

siyuan-note siyuan: 3.1.15

References

https://github.com/siyuan-note/siyuan/commit/e70ed57f6e4852e2bd702671aeb8eb3a47a36d71
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-fqj6-whhx-47p7

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