Reflected Cross-Site Scripting in Next AI Draw.io by DayuanJiang
CVE-2026-73037

5.1MEDIUM

Key Information:

Vendor

Dayuanjiang

Status
Next-ai-draw-io
Vendor
CVE Published:
13 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-73037?

Next AI Draw.io versions 0.2.1 through 0.4.16 are susceptible to a reflected cross-site scripting (XSS) flaw stemming from the mcp query parameter not being properly sanitized. This allows attackers to construct malicious URLs that, when accessed, can execute arbitrary JavaScript code in the context of the user's localhost. Such exploitation can lead to unauthorized access to diagram sessions and API data, posing significant security risks to users.

Affected Version(s)

next-ai-draw-io 0.2.1 <= 0.4.16

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-73037 - Proof of Concept

References

https://github.com/DayuanJiang/next-ai-draw-io/issues/917
technical-descriptionexploit
https://www.vulncheck.com/advisories/next-ai-draw-io-refl...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

HK4zCzi (Ho Viet Khanh)
.