What is CVE-2026-73037?

CVE-2026-73037 is a medium-severity vulnerability in Dayuanjiang Next-Ai-Draw-Io, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-13.

How severe is CVE-2026-73037?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Dayuanjiang Next-Ai-Draw-Io

CVE-2026-73037

Next AI Draw.io 0.2.1 through 0.4.16 contains a reflected cross-site scripting vulnerability in the mcp query parameter that is interpolated without escaping into HTML and JavaScript. Attackers can craft malicious URLs to execute arbitrary JavaScript in the localhost origin, enabling exfiltration of diagram sessions and API data.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-08-13 · last modified 2026-09-09.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (16.2th percentile), scored 2026-09-28.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Dayuanjiang Next-Ai-Draw-Io — versions 0.2.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/DayuanJiang/next-ai-draw-io/issues/917 (issue-tracking, technical-description, exploit)
www.vulncheck.com/advisories/next-ai-draw-io-reflected-xss-via-unsanitized-mcp-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-73037?: CVE-2026-73037 is a medium-severity vulnerability in Dayuanjiang Next-Ai-Draw-Io, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-13.
How severe is CVE-2026-73037?: Medium severity. CVSS v3 base score is 6.1 out of 10.