Security Advisory

CVE-2026-25539

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-02-04 21:39:12

Last updated 2026-02-05 18:32:27

Assigner GitHub_M

State PUBLISHED

Description

SiYuan is a personal knowledge management system. Prior to version 3.5.5, the /api/file/copyFile endpoint does not validate the dest parameter, allowing authenticated users to write files to arbitrary locations on the filesystem. This can lead to Remote Code Execution (RCE) by writing to sensitive locations such as cron jobs, SSH authorized_keys, or shell configuration files. This issue has been patched in version 3.5.5.

← Browse all CVEs View on cve.org ↗