CVE-2026-87814 — SiYuan before v3.8.2 Stored XSS via Asset Preview
SiYuan before v3.8.2 contains a stored cross-site scripting vulnerability in the search asset preview feature that fails to escape indexed asset content before inserting it into…
Published: 2026-09-09 · CVSS: 8.4 · CVSS 4.0
SiYuan before v3.8.2 contains a stored cross-site scripting vulnerability in the search asset preview feature that fails to escape indexed asset content before inserting it into the DOM using innerHTML. Attackers who can place crafted text assets in a workspace can execute JavaScript in the SiYuan origin when victims preview the assets, enabling authenticated API requests and workspace manipulation.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7