CVE-2026-73037

5.1 mediumEPSS 0.3%

Medium (5.1). EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

5.1 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

6.1 medium

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-08-13
Modified: 2026-09-09
Record from: the NVD, synced 2026-10-19

References

https://github.com/DayuanJiang/next-ai-draw-io/issues/917
https://www.vulncheck.com/advisories/next-ai-draw-io-reflected-xss-via-unsanitized-mcp-query-parameter

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