CVE-2025-21609

CRITICAL

SiYuan Note <3.1.18 - File Deletion

Title source: llm
STIX 2.1

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.

Scores

CVSS v3 9.1
EPSS 0.0037
EPSS Percentile 58.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-552 CWE-459
Status published
Products (2)
b3log/siyuan 3.1.18
siyuan-note/siyuan 0Go
Published Jan 03, 2025
Tracked Since Feb 18, 2026