CVE-2026-63334Medium· 6.8▾ TwilightPoC available

draw.io is a configurable diagramming and whiteboarding application

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score49/ 100 · Moderate

impact 37.4 · likelihood 0.1 · exploitation 12

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

A public proof-of-concept already exists for this vulnerability — see Exploit availability below.

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Published

Sep 21, 2026

Updated

Sep 23, 2026

CVSS

6.8

Vendor

jgraph

Product

drawio

CWE

CWE-367, CWE-918

Depth score

49 · Moderate

EPSS

0.32% · p24

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

CISA SSVC

decided 2026-09-21

Exploitation: poc
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Sep 23.

0.2% → 0.3%▲ 0.1%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

5 events · 4 days

Sep 21, 2026Published
Disclosed via NVD
Sep 21, 2026Public exploit observed
Exploit / PoC code exists
Sep 23, 2026Record revised
Last analysed / modified upstream
Sep 23, 2026EPSS first tracked
0.2%
Sep 25, 2026EPSS peak
0.2% → 0.3%

jgraph CWE-367 CWE-918 #nvd #cve.org #exploit-available

Affected

drawio < 30.2.7

Full technical detail▾

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Change history

Field changes observed since this record was first indexed.

Sep 21, 2026Public exploit / PoC published

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org#exploit-available

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