CVE-2026-23847: SiYuan has a Reflected Cross-Site Scripting (XSS) via /api/icon/getDynamicIcon

January 21, 2026

Reflected XSS in /api/icon/getDynamicIcon due to unsanitized SVG input.

References

github.com/advisories/GHSA-w836-5gpm-7r93
github.com/siyuan-note/siyuan
github.com/siyuan-note/siyuan/commit/5c0cc375b47567e15edd2119066b09bb0aa18777
github.com/siyuan-note/siyuan/issues/16844
github.com/siyuan-note/siyuan/security/advisories/GHSA-w836-5gpm-7r93
nvd.nist.gov/vuln/detail/CVE-2026-23847

Code Behaviors & Features

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