CVE-2026-100636 — SiYuan before v3.8.4 Path Traversal via exportBrowserHTML folder
SiYuan versions before v3.8.4 contain a path traversal vulnerability in the exportBrowserHTML endpoint that allows authenticated administrators to write arbitrary HTML content t…
Published: 2026-09-26 · CVSS: 8.3 · CVSS 4.0
SiYuan versions before v3.8.4 contain a path traversal vulnerability in the exportBrowserHTML endpoint that allows authenticated administrators to write arbitrary HTML content to index.html outside the workspace directory. Attackers can supply a folder parameter with directory traversal sequences to escape the export directory and overwrite index.html in any pre-existing kernel-writable location, enabling stored XSS or workspace defacement.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7