CVE-2026-25539
SiYuan has Arbitrary File Write via /api/file/copyFile leading to RCE in github.com/siyuan-note/siyuan/kernel
9.1
CRITICAL
CVSS 3.1
EPSS 0.24%
Description
SiYuan has Arbitrary File Write via /api/file/copyFile leading to RCE in github.com/siyuan-note/siyuan/kernel
How to fix CVE-2026-25539
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Go/github.com/siyuan-note/siyuan/kernel—no fix listed
- —no fix listed
Is CVE-2026-25539 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, <= 0.0.0-20260126094835-d5d10dd41b0c
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |