{"id":"CVE-2026-73053","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-73053","summary":"SiYuan versions before v3.7.4 contain a cross-site scripting vulnerability in the unicode2Emoji function that fails to sanitize codepoint branch output. Attackers can craft document…","details":"SiYuan versions before v3.7.4 contain a cross-site scripting vulnerability in the unicode2Emoji function that fails to sanitize codepoint branch output. Attackers can craft document icons with hex-encoded markup that executes in the renderer with Node integration enabled, achieving arbitrary code execution on the host system.","published":"2026-08-15T22:16:55.157","modified":"2026-08-15T22:16:55.157","cvss":{"score":9,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vx5w-qrvp-mmcq"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/siyuan-before-cross-site-scripting-via-unicode2emoji"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-15T22:16:55.157"}}