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.

CVSS v4.0

5.1 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.15% chance of exploitation in the next 30 days, 5th percentile

Published

2026-08-13

Updated

2026-08-14

Proof-of-concept exploits (1)

• DayuanJiang/next-ai-draw-io/issues/917

References

• CVE Record
• NVD entry

Related

• CVE-2026-72777
• CVE-2026-73034
• CVE-2026-7305
• CVE-2026-73033
• CVE-2026-7306
• CVE-2026-73030