{"id":"CVE-2026-63334","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-63334","generatedAt":"2026-10-28T02:21:53.084Z","title":"Prior to version 30.2.7, deployments with ENABLE_DRAWIO_PROXY=1 are vulnerable to server-side request forgery because src/main/java/com/mxgraph/online/Utils.java performs the private-address check in Utils.sanitizeUrl() using one DNS resolution, while…","description":"draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.7, deployments with ENABLE_DRAWIO_PROXY=1 are vulnerable to server-side request forgery because src/main/java/com/mxgraph/online/Utils.java performs the private-address check in Utils.sanitizeUrl() using one DNS resolution, while src/main/java/com/mxgraph/online/ProxyServlet.java later calls URL.openConnection() and performs a second resolution. An attacker-controlled hostname can resolve to a public address during validation and then to a private, link-local, or cloud metadata address when the connection is opened. Successful exploitation can return cloud instance metadata or responses from internal HTTP services through the proxy. This issue is fixed in version 30.2.7.","published":"2026-09-21T17:17:39.000Z","lastModified":"2026-09-23T18:26:49.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N"},"cwe":["CWE-367","CWE-918"],"affected":[],"epss":{"score":0.00315,"percentile":0.242,"date":"2026-10-26","history":[{"date":"2026-09-22","score":0.00201,"percentile":0.10328}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.32%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-21T17:17:39.000Z","detail":{"score":"6.8","severity":"MEDIUM","publishedAt":"2026-09-21T17:17:39.220Z"},"summary":"New CVE, medium severity (CVSS 6.8)."}],"references":[{"url":"https://github.com/jgraph/drawio/commit/650fbd742814f6502f78248dc2d8e2aaa5e42b5e","source":"security-advisories@github.com"},{"url":"https://github.com/jgraph/drawio/releases/tag/v30.2.7","source":"security-advisories@github.com"},{"url":"https://github.com/jgraph/drawio/security/advisories/GHSA-3v4h-8r2c-m8c5","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63334","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}