Vulnerability · Published Jan 3, 2025 · Assigned by GitHub_M

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

High 8.7

In plain English

A high-severity security flaw in siyuan from siyuan-note. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.6%top 49.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/siyuan-note/siyuan/kernel	no fix listed	GHSA-8fx8-pffw-w498
Go	github.com/siyuan-note/siyuan/kernel	no fix listed	GO-2025-3362

Affected products (as reported)

Vendor	Product	Versions
siyuan-note	siyuan	= 3.1.18

Weakness: CWE-459, CWE-552 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8fx8-pffw-w498 x_refsource_CONFIRM
https://github.com/siyuan-note/siyuan/commit/d9887aeec1b27073bec66299a9a4181dc42969f3 x_refsource_MISC