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CVE-2025-21609

Date: January 3, 2025

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.

Severity Score

Related Resources (5)

https://github.com/siyuan-note/siyuan/commit/d9887aeec1b27073bec66299a9a4181dc42969f3
https://nvd.nist.gov/vuln/detail/CVE-2025-21609
https://github.com/siyuan-note/siyuan
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8fx8-pffw-w498
https://www.mend.io/vulnerability-database/CVE-2025-21609

Severity Score

Weakness Type (CWE)

Files or Directories Accessible to External Parties

CWE-552

Incomplete Cleanup

CWE-459

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): HIGH

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