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Medium · 6.8 CVE-2026-87812 EUVD-2026-74838GHSA-rv6c-xvcj-4qwg

SiYuan before v3.8.2 Stored XSS via Bazaar iconURL

Published Sep 9, 2026 · Updated Sep 10, 2026 · Assigned by VulnCheck

Description

SiYuan before v3.8.2 contains a stored cross-site scripting vulnerability in Bazaar package cards where the iconURL metadata is inserted directly into HTML img src attributes without escaping. Attackers can inject malicious URLs with event handlers that execute JavaScript in the authenticated SiYuan origin when users view Bazaar listings, enabling API requests and application state manipulation.

Affected products

VendorProductAffectedFixed
siyuan-note siyuan < 3.8.2 3.8.2

References