Vulnerability Details CVE-2025-21609
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 38.5%
CVSS Severity
CVSS v3 Score 9.1
References