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Critical · 9.0 CVE-2026-73050 EUVD-2026-59800GHSA-cx3q-5hjf-hw39

SiYuan before v3.7.4 Stored XSS via select option color

Published Aug 15, 2026 · Updated Aug 17, 2026 · Assigned by VulnCheck

Description

SiYuan versions before v3.7.4 fail to validate or escape the color field in attribute-view select options, allowing stored cross-site scripting through eight unescaped render sites. Attackers can inject event-handler attributes by including quotation marks in the color value, executing arbitrary JavaScript when viewing databases containing the malicious select field.

Affected products

VendorProductAffectedFixed
siyuan-note siyuan < 3.7.4 3.7.4

References