{"schema_version":"1","data":[{"id":12997,"advisory_id":"887ba502-23cc-46ba-8a51-1b1ce7a4889b","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-74902","source_published_at":"2026-08-18T11:19:34.741+00:00","published_at":"2026-10-25T00:17:21.627984+00:00","extraction_method":"structured","technologies":["core-cve","siyuan"],"cve_ids":["CVE-2026-74902"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"SiYuan before v3.7.4 XSS-to-RCE via malicious filename upload","summary":"SiYuan before v3.7.4 contains a cross-site scripting vulnerability in the file upload validation flow that fails to escape filenames before inserting them into HTML via insertAdjacentHTML. Attackers can craft a malicious filename containing script payloads that execute with full OS command access when a user drags, drops, or pastes the file into the editor.","evidence":"cve:CVE-2026-74902","products":[{"name":{"value":"siyuan","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"critical","structured":{"id":"CVE-2026-74902","aliases":["CVE-2026-74902"],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","baseScore":9.3,"attackVector":"LOCAL","baseSeverity":"CRITICAL","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","userInteraction":"PASSIVE","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","subIntegrityImpact":"HIGH","vulnIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","vulnConfidentialityImpact":"HIGH"}},{"format":"CVSS","cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":8.6,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}}],"affected":[{"vendor":"siyuan-note","product":"siyuan","versions":[{"status":"affected","version":"0","lessThan":"3.7.4","versionType":"semver"},{"status":"unaffected","version":"3.7.4","versionType":"semver"}],"packageURL":"pkg:golang/github.com/siyuan-note/siyuan/kernel","defaultStatus":"unaffected"}],"modified":"2026-10-08T15:51:41.982Z","provider":"cve","references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-jf56-jrhq-j2qp","https://www.vulncheck.com/advisories/siyuan-before-xss-to-rce-via-malicious-filename-upload"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-74902","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-08-18T12:52:00.846926Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-18T13:36:31.175Z"}}],"cna":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-10-08T15:51:41.982Z"}}},"related_cves":[{"value":"CVE-2026-74902","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}}],"next_after":12997,"next_before":12997}