{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-58504", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-30T20:21:25.813Z", "datePublished": "2026-09-21T16:15:30.398Z", "dateUpdated": "2026-09-21T16:15:30.398Z"}, "containers": {"cna": {"title": "draw.io: Stored XSS on file open via editable=0 sibling cell \u2014 patch bypass of CVE-2026-46642", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-116", "lang": "en", "description": "CWE-116: Improper Encoding or Escaping of Output", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/jgraph/drawio/security/advisories/GHSA-c76x-r78m-phwx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/jgraph/drawio/security/advisories/GHSA-c76x-r78m-phwx"}, {"name": "https://github.com/jgraph/drawio/commit/7976c02e1b10b1687c028d82782f9f5d90a885d6", "tags": ["x_refsource_MISC"], "url": "https://github.com/jgraph/drawio/commit/7976c02e1b10b1687c028d82782f9f5d90a885d6"}, {"name": "https://github.com/jgraph/drawio/releases/tag/v30.2.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/jgraph/drawio/releases/tag/v30.2.5"}], "affected": [{"vendor": "jgraph", "product": "drawio", "versions": [{"version": "< 30.2.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-21T16:15:30.398Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-c76x-r78m-phwx", "discovery": "UNKNOWN"}}}}

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