The SiYuan Note application (v3.5.3) contains a logic vulnerability in the /api/file/globalCopyFiles endpoint. The function allows authenticated users to copy files from any location on the server's filesystem into the application's workspace without proper path validation
Markdown feature allows unrestricted server side html-rendering which allows arbitary file read (LFD) and fully SSRF access We in @0xL4ugh ( @abdoghazy2015, @xtromera, @A-z4ki, @ZeyadZonkorany and @KarimTantawey) During playing Null CTF 2025 that helps us solved a challenge with unintended way : ) Please note that we used the latest Version and deployed it via this dockerfile : Dockerfile: FROM b3log/siyuan ENV TZ=America/New_York \ PUID=1000 \ PGID=1000 \ SIYUAN_ACCESS_AUTH_CODE=SuperSecretPassword RUN …
Reflected XSS in /api/icon/getDynamicIcon due to unsanitized SVG input.
A Stored Cross-Site Scripting (XSS) vulnerability exists in SiYuan Note. The application does not sanitize uploaded SVG files. If a user uploads and views a malicious SVG file (e.g., imported from an untrusted source), arbitrary JavaScript code is executed in the context of their authenticated session.
Function importZipMd is vulnerable to ZipSlip which allows an authenticated user to overwrite files on the system.
Siyuan is vulnerable to RCE. The issue stems from a "Zip Slip" vulnerability during zip file extraction, combined with the ability to overwrite system executables and subsequently trigger their execution.
A arbitrary file deletion vulnerability has been identified in the latest version of Siyuan Note. 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.
Siyuan's /api/template/renderSprig endpoint is vulnerable to Server-Side Template Injection (SSTI) through the Sprig template engine. Although the engine has limitations, it allows attackers to access environment variables
The /api/asset/upload endpoint in Siyuan is vulnerable to both arbitrary file write to the host and stored XSS (via the file write).
An arbitrary file read vulnerability exists in Siyuan's /api/template/render endpoint. The absence of proper validation on the path parameter allows attackers to access sensitive files on the host system.
Siyuan's /api/export/exportResources endpoint is vulnerable to arbitary file read via path traversal. It is possible to manipulate the paths parameter to access and download arbitrary files from the host system by traversing the workspace directory structure.