CVE-2026-32940

The record

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. The unauthenticated /api/icon/getDynamicIcon endpoint serves user-controlled input (via the content parameter) directly into SVG markup using fmt.Sprintf with no escaping, served as Content-Type: image/svg+xml. This creates a click-through XSS: a victim navigates to a crafted URL, sees an SVG with an injected link, and clicking it triggers JavaScript via the bypassed MIME types. The attack requires direct navigation to the endpoint or <object>/<embed> embedding, since <img> tag rendering in the frontend doesn't allow interactive links. This issue has been fixed in version 3.6.1.

Affected packages

Related vulnerabilities

• GHSA-4mx9-3c2h-hwhg SiYuan has a SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for… Same vulnerability
• CVE-2026-33990 Docker Model Runner (DMR) is software used to manage, run, and deploy AI models using… Also affects govulncheck-vulndb
• CVE-2026-34204 MinIO is a high-performance object storage system. Also affects govulncheck-vulndb
• CVE-2026-34041 act is a project which allows for local running of github actions. Also affects govulncheck-vulndb
• CVE-2026-34042 act is a project which allows for local running of github actions. Also affects govulncheck-vulndb
• CVE-2026-34040 Moby is an open source container framework. Also affects govulncheck-vulndb
• CVE-2026-33997 Moby is an open source container framework. Also affects govulncheck-vulndb
• CVE-2026-27018 Gotenberg is an API for converting document formats. Also affects govulncheck-vulndb