CVE-2025-21609: SiYuan has an arbitrary file deletion vulnerability

January 3, 2025 (updated October 31, 2025)

A arbitrary file deletion vulnerability has been identified in the latest version of Siyuan Note. 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.

References

github.com/advisories/GHSA-8fx8-pffw-w498
github.com/siyuan-note/siyuan
github.com/siyuan-note/siyuan/commit/d9887aeec1b27073bec66299a9a4181dc42969f3
github.com/siyuan-note/siyuan/security/advisories/GHSA-8fx8-pffw-w498
nvd.nist.gov/vuln/detail/CVE-2025-21609

Code Behaviors & Features

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