draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.7, src/main/java/com/mxgraph/online/ExportProxyServlet.java uses request.getPathInfo() to build a proxyPath and appends it directly to EXPORT_URL without rejecting dot segments or confirming that the normalized destination remains under the configured export path. An unauthenticated request containing traversal segments can therefore address unintended routes on the internal export server, and the servlet forwards all request headers and the request body to that destination, allowing arbitrary header injection. Depending on the export service configuration, exploitation can expose administration, debugging, health, or configuration endpoints and can permit unintended internal actions. This issue is fixed in version 30.2.7.
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History

Mon, 21 Sep 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Jgraph
Jgraph drawio
Vendors & Products Jgraph
Jgraph drawio

Mon, 21 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Description draw.io is a configurable diagramming and whiteboarding application. Prior to version 30.2.7, src/main/java/com/mxgraph/online/ExportProxyServlet.java uses request.getPathInfo() to build a proxyPath and appends it directly to EXPORT_URL without rejecting dot segments or confirming that the normalized destination remains under the configured export path. An unauthenticated request containing traversal segments can therefore address unintended routes on the internal export server, and the servlet forwards all request headers and the request body to that destination, allowing arbitrary header injection. Depending on the export service configuration, exploitation can expose administration, debugging, health, or configuration endpoints and can permit unintended internal actions. This issue is fixed in version 30.2.7.
Title draw.io: Path traversal in ExportProxyServlet allows access to arbitrary backend endpoints
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-21T16:18:39.198Z

Reserved: 2026-07-16T19:20:28.988Z

Link: CVE-2026-63416

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-21T17:17:39.503

Modified: 2026-09-21T17:17:39.503

Link: CVE-2026-63416

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-21T18:30:17Z

Weaknesses