Next AI Draw.io 0.2.1 - 0.4.16 Reflected XSS via unsanitized mcp query parameter
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| DayuanJiang | next-ai-draw-io | 0.2.1 – 0.4.16 | — | No fix listed | CNA |
- next-ai-draw-io VendorDayuanJiang Affected 0.2.1 – 0.4.16 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-73037
- 2026-10-03 Alias added: GHSA-7wvw-5p69-5396
References
Exploit 1
More DayuanJiang vulnerabilities
- TI-2026-51003 Next AI Draw.io 0.4.16 SSRF via DNS Rebinding in parse-url CVSS 4.0HIGH 7.7
- TI-2026-29344 Next AI Draw.io: Unbounded HTTP Body — Denial of Service CVSS 3.1MEDIUM 6.2
Sources
- CVE-2026-73037 · CVE Program
- CVE-2026-73037 · NVD
- FIRST EPSS
- GHSA-7wvw-5p69-5396 · GitHub Advisory Database · CC BY 4.0
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