Vulnerability · Published Aug 13, 2026 · Assigned by VulnCheck
CVE-2026-73037Next AI Draw.io 0.2.1 - 0.4.16 Reflected XSS via unsanitized mcp query parameter
Medium 6.1
In plain English
A medium-severity cross-site scripting in next-ai-draw-io from DayuanJiang. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.3%top 81.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| DayuanJiang | next-ai-draw-io | 0.2.1 – through 0.4.16 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
- Researcher Disclosure technical-description, exploit, issue-tracking
- https://www.vulncheck.com/advisories/next-ai-draw-io-reflected-xss-via-unsanitized-mcp-query-parameter third-party-advisory