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TI-2026-45164 Aliases CVE-2026-63334

draw.io: SSRF via DNS rebinding in ProxyServlet bypasses private IP blocklist

Priority MEDIUM 63CWE-367Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00315 24th percentileScored 2026-11-07
Fix Fixed drawio (jgraph): 30.2.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
jgraphdrawiobefore 30.2.730.2.7Patch availableCNA
  • drawio Vendorjgraph Affected before 30.2.7 Fixed in 30.2.7 Patch available CNA

Remediation

  • Fix · CNA drawio (jgraph) Fixed in 30.2.7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-63334

References

Other 3

  • TI-2023-03691 OS Command Injection in jgraph/drawio CVSS 3.1CRITICAL 9.8
  • TI-2023-03690 OS Command Injection in jgraph/drawio CVSS 3.1CRITICAL 9.8
  • TI-2026-53724 draw.io: Unauthenticated SSRF via IPv6 ULA blocklist bypass in /embed2.js CVSS 4.0HIGH 7.7
  • TI-2023-03178 Denial of Service in jgraph/drawio CVSS 3.1HIGH 7.5
  • TI-2026-83372 Search path hijacking in draw.io Desktop on Windows CVSS 3.1HIGH 7.8
  • TI-2023-02834 Cross-site Scripting (XSS) - Stored in jgraph/drawio CVSS 3.1MEDIUM 6.1
See all 39 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences