{"schema_version":"1","data":[{"id":8689,"advisory_id":"2b14aa48-6748-4791-b029-c347a5e87879","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100637","source_published_at":"2026-09-26T13:23:11.226+00:00","published_at":"2026-10-24T23:05:08.591646+00:00","extraction_method":"structured","technologies":["core-cve","siyuan"],"cve_ids":["CVE-2026-100637"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"SiYuan before v3.8.4 Path Traversal via checkoutRepo sessionID","summary":"SiYuan versions before v3.8.4 contain a path traversal vulnerability in the checkoutRepo endpoint that allows authenticated administrators to write JSON files outside the workspace. Attackers can supply a sessionID parameter containing directory traversal sequences to overwrite arbitrary JSON files in pre-existing kernel-writable directories outside workspace boundaries.","evidence":"cve:CVE-2026-100637","products":[{"name":{"value":"siyuan","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"high","structured":{"id":"CVE-2026-100637","aliases":["CVE-2026-100637"],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","baseScore":8.3,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L","userInteraction":"NONE","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","subIntegrityImpact":"HIGH","vulnIntegrityImpact":"HIGH","subAvailabilityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","vulnConfidentialityImpact":"NONE"}},{"format":"CVSS","cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":7.6,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:L","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"HIGH","confidentialityImpact":"NONE"}}],"affected":[{"vendor":"siyuan-note","product":"siyuan","versions":[{"status":"affected","version":"0","lessThan":"3.8.4","versionType":"semver"},{"status":"unaffected","version":"3.8.4","versionType":"semver"}],"packageURL":"pkg:golang/github.com/siyuan-note/siyuan","defaultStatus":"unaffected"}],"modified":"2026-10-05T15:06:34.280Z","provider":"cve","references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-jhmh-hr4g-c5g2","https://www.vulncheck.com/advisories/siyuan-before-3.8.4-path-traversal-via-checkoutrepo-sessionid"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-100637","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-05T15:06:28.154306Z"}}}],"references":[{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-jhmh-hr4g-c5g2","tags":["exploit"]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-05T15:06:34.280Z"}}],"cna":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-09-26T13:23:11.226Z"}}},"related_cves":[{"value":"CVE-2026-100637","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}}],"next_after":8689,"next_before":8689}