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)

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.

Affected products

Dayuanjiang Next-ai-draw-io — versions 0.2.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (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.