CVE-2026-32940 SiYuan has a SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for CVE-2026-29183)

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, SanitizeSVG has an incomplete blocklist — it blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml, both of which can render SVG with JavaScript execution. Th...

CVE-2026-32940

SiYuan Note's CVE-2026-32940 affects versions 3.6.0 and below where SanitizeSVG's blocklist is incomplete, allowing a click-through XSS via the unauthenticated /api/icon/getDynamicIcon endpoint. The endpoint echoes user-controlled input (content) directly into SVG markup using fmt.Sprintf with no...

SiYuan has a SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for CVE-2026-29183)

SanitizeSVG bypass via data:text/xml in getDynamicIcon incomplete fix for CVE-2026-29183 SanitizeSVG blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml. Both render SVG with onload JavaScript execution confirmed in Chromium 136, other...

GHSA-4MX9-3C2H-HWHG SiYuan has a SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for CVE-2026-29183)

SanitizeSVG bypass via data:text/xml in getDynamicIcon incomplete fix for CVE-2026-29183 SanitizeSVG blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml. Both render SVG with onload JavaScript execution confirmed in Chromium 136, other...