CVE-2026-25539

CRITICAL

9.1

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung9.1

SchweregradCRITICAL

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienHIGH

BenutzerinteraktionNONE

Veroffentlicht2/4/2026

Zuletzt geandert2/11/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

b3log:siyuan

Schwachen (CWE)

CWE-22

Referenzen

https://github.com/siyuan-note/siyuan/commit/d7f790755edf8c78d2b4176171e5a0cdcd720feb(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c4jr-5q7w-f6r9(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c4jr-5q7w-f6r9(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Korrelationen

Keine Korrelationen erfasst

This product uses data from the NVD API but is not endorsed or certified by the NVD.