CVE-2025-21609

Summary

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.

Affected Software

VendorProductVersion RangeStatus
siyuan-notesiyuan= 3.1.18affected

Weaknesses

  • CWE-459: CWE-459: Incomplete Cleanup
  • CWE-552: CWE-552: Files or Directories Accessible to External Parties

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References