CVE-2025-21609 Information

Description

SiYuan is self-hosted open source personal knowledge management software. SiYuan Note version 3.1.18 has an arbitrary file deletion vulnerability. The vulnerability exists in the POST /api/history/getDocHistoryContent endpoint. An attacker can craft a payload to exploit this vulnerability resulting in the deletion of arbitrary files on the server. Commit d9887aeec1b27073bec66299a9a4181dc42969f3 fixes this vulnerability and is expected to be available in version 3.1.19.

Reference

https://github.com/siyuan-note/siyuan/commit/d9887aeec1b27073bec66299a9a4181dc42969f3 https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8fx8-pffw-w498