Vulnerability details

CVE-2025-21609

siyuan-note siyuan

SiYuan has an arbitrary file deletion vulnerability

CVSS 4.0

8.7High

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.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (GitHub_M)	`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`

Affected products

Vendor	Product	Versions	Source
siyuan-note	siyuan	= 3.1.18	CVEProject cvelistV5 (CNA)

References and advisories

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

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Details

Published: 2025-01-03
Last updated: 2025-01-03
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.62%

Probability of exploitation in 30 days

50.2%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

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