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.
CVE-2026-63416
This low-severity CVE scores 3.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 72% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.7
- EG Score
- 3.7(medium)
- EG Risk
- 33(Track)EG Risk 33/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity37% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 28%
- KEV
- Not listed
Published
September 21, 2026
Last Modified
September 24, 2026
References (4)
- security-advisories@githubhttps://github.com/jgraph/drawio/commit/650fbd742814f6502f78248dc2d8e2aaa5e42b5e
- security-advisories@githubhttps://github.com/jgraph/drawio/releases/tag/v30.2.7
- security-advisories@githubhttps://github.com/jgraph/drawio/security/advisories/GHSA-3pq9-9hg4-ggfw
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/jgraph/drawio/security/advisories/GHSA-3pq9-9hg4-ggfw
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 7× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-24 23:38 UTCEG score recompute
- 2026-09-24 22:27 UTCEG score recompute
- 2026-09-23 18:39 UTCEG score recompute
- 2026-09-23 17:54 UTCEPSS rescore
- 2026-09-21 17:25 UTCEG score recompute
- 2026-09-21 16:25 UTCEG score recompute
- 2026-09-21 16:25 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-63416?
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Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-63416
Is Your Infrastructure Affected by CVE-2026-63416?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.