{"schema_version":"1","data":[{"id":3497,"advisory_id":"4cc99ae8-a68c-49bb-8302-cf93119c7861","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-58504","source_published_at":"2026-09-21T16:15:30.398+00:00","published_at":"2026-10-24T21:36:10.843037+00:00","extraction_method":"structured","technologies":["core-cve","drawio"],"cve_ids":["CVE-2026-58504"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"draw.io: Stored XSS on file open via editable=0 sibling cell — patch bypass of CVE-2026-46642","summary":"draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.5, opening or importing a crafted .drawio file can execute attacker-controlled JavaScript in the draw.io origin when selected cells are processed by TextFormatPanel.addFont() in src/main/webapp/js/grapheditor/Format.js. An HTML sibling cell keeps the formatted-label path enabled while an editable=0 plain-text sibling is excluded from the merged selection style but remains in the iteration set. graph.cellRenderer.getLabelValue() returns that plain-text label without HTML encoding, and mxUtils.canConvertHtmlToSvg() parses it as HTML, bypassing the earlier CVE-2026-46642 remediation. Successful exploitation can expose diagram data, browser storage, non-HttpOnly cookies, and same-origin actions available to the victim. This issue is fixed in version 30.2.5.","evidence":"cve:CVE-2026-58504","products":[{"name":{"value":"drawio","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"medium","structured":{"id":"CVE-2026-58504","aliases":["CVE-2026-58504"],"metrics":[{"cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":6.1,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}}],"affected":[{"vendor":"jgraph","product":"drawio","versions":[{"status":"affected","version":"< 30.2.5"}]}],"modified":"2026-09-29T15:05:34.205Z","provider":"cve","references":["https://github.com/jgraph/drawio/security/advisories/GHSA-c76x-r78m-phwx","https://github.com/jgraph/drawio/commit/7976c02e1b10b1687c028d82782f9f5d90a885d6","https://github.com/jgraph/drawio/releases/tag/v30.2.5"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-58504","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-29T15:05:28.465307Z"}}}],"references":[{"url":"https://github.com/jgraph/drawio/security/advisories/GHSA-c76x-r78m-phwx","tags":["exploit"]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-29T15:05:34.205Z"}}],"cna":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-21T16:15:30.398Z"}}},"related_cves":[{"value":"CVE-2026-58504","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"},"priority":{"reasons":[],"severity":"medium","linked_cves":[],"fix_available":false,"known_exploited":false,"publisher_severity":"medium"},"context_update":false}],"next_after":3497,"next_before":3497}