{"id":"CVE-2026-58504","revision":"03a00cb677ea4d9ab9e9c0c83ce64977","records":[{"revision":"03a00cb677ea4d9ab9e9c0c83ce64977","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-58504","aliases":[],"title":"draw.io: Stored XSS on file open via editable=0 sibling cell — patch bypass of CVE-2026-46642","description":"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.","state":0,"publishedAt":"2026-09-21T16:15:30.398+00:00","modifiedAt":"2026-09-29T15:05:34.205+00:00","affected":[{"ecosystem":"Vendor product","name":"drawio","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"jgraph\",\n                    \"product\": \"drawio\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 30.2.5\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":"MEDIUM"}],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-58504","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-58504","identifiers":["CVE-2026-58504"]},"retained":false,"historicalAffected":[]}],"coverage":[]}