{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23645", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-01-14T16:08:37.484Z", "datePublished": "2026-01-16T19:20:06.744Z", "dateUpdated": "2026-01-16T21:37:58.336Z"}, "containers": {"cna": {"title": "SiYuan Vulnerable to Stored Cross-Site Scripting (XSS) via Unrestricted SVG File Upload", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pcjq-j3mq-jv5j", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pcjq-j3mq-jv5j"}, {"name": "https://github.com/siyuan-note/siyuan/issues/16844", "tags": ["x_refsource_MISC"], "url": "https://github.com/siyuan-note/siyuan/issues/16844"}, {"name": "https://github.com/siyuan-note/siyuan/commit/11115da3d0de950593ee4ce375cf7f9018484388", "tags": ["x_refsource_MISC"], "url": "https://github.com/siyuan-note/siyuan/commit/11115da3d0de950593ee4ce375cf7f9018484388"}], "affected": [{"vendor": "siyuan-note", "product": "siyuan", "versions": [{"version": "< 3.5.4-dev2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-01-16T19:20:06.744Z"}, "descriptions": [{"lang": "en", "value": "SiYuan is self-hosted, open source personal knowledge management software. Prior to 3.5.4-dev2, a Stored Cross-Site Scripting (XSS) vulnerability exists in SiYuan Note. The application does not sanitize uploaded SVG files. If a user uploads and views a malicious SVG file (e.g., imported from an untrusted source), arbitrary JavaScript code is executed in the context of their authenticated session. This vulnerability is fixed in 3.5.4-dev2."}], "source": {"advisory": "GHSA-pcjq-j3mq-jv5j", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-01-16T21:37:47.881335Z", "id": "CVE-2026-23645", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-16T21:37:58.336Z"}}]}}

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