PT-2026-88952 · Git+1 · Siyuan

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CVE-2026-87814

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Published

2026-09-09

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Updated

2026-09-09

CVSS v3.1

7.3

High

VectorAV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
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.

Exploit

Fix

XSS

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Weakness Enumeration

Related Identifiers

CVE-2026-87814
GHSA-64GP-333Q-MQ6J

Affected Products

Siyuan