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 the DOM using innerHTML. Attackers who can place crafted text assets in a workspace can execute JavaScript in the SiYua...

CVE-2026-87814

SiYuan before v3.8.2 is affected by a stored cross-site scripting (XSS) vulnerability in the search asset preview feature. The root cause is a failure to escape indexed asset content before inserting it into the DOM via innerHTML . An attacker who can place crafted text assets in a workspace can ...

EUVD-2026-74840

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 SiYua...

CVE-2026-56384

Craft CMS contains a missing authorization vulnerability in the assets/preview-thumb endpoint. A Control Panel user without permission to view a target private asset can call the endpoint with an attacker-controlled assetId and receive preview HTML containing a signed fallback transform preview...

GHSA-44PX-QJJC-XRHQ Craft CMS: Authorized asset "preview file" requests bypass allows users without asset access to retrieve private preview metadata

Summary An authenticated low-privileged user can call assets/preview-file for an asset they are not authorized to view and still receive preview response data previewHtml for that private asset. The returned preview HTML included a private preview image route containing the target private assetId...

Craft CMS: Authorized asset "preview file" requests bypass allows users without asset access to retrieve private preview metadata

Summary An authenticated low-privileged user can call assets/preview-file for an asset they are not authorized to view and still receive preview response data previewHtml for that private asset. The returned preview HTML included a private preview image route containing the target private assetId...