{"id":"CVE-2026-73053","title":"SiYuan versions before v3.7.4 contain a cross-site scripting vulnerability in the unicode2Emoji function that fails to sanitize codepoint branch output","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 icons with hex-encoded markup that executes in the rend…","severity":"critical","cvss":9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","cwe":["CWE-79"],"published":"2026-08-15","updated":"2026-08-15","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73053","references":[{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vx5w-qrvp-mmcq","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/siyuan-before-cross-site-scripting-via-unicode2emoji","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-08-16T13:39:04.516Z","epss":0.00284,"epssPercentile":0.21096,"slug":"CVE-2026-73053","body":"## Overview\n\nSiYuan 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":49.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}