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VulnerabilityPublished Updated

CVE-2026-73037: DayuanJiang next-ai-draw-io · Cross-site Scripting

Affects DayuanJiang next-ai-draw-ioSource CVE Database V5

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Not known to be exploited · CVSS 5.1 Medium.

Data as of 12 Nov 2026, 23:24 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
DayuanJiangnext-ai-draw-ioAffected
  • >=0.2.1 <=0.4.16
Fixed in–
GitHubnext-ai-draw-iopkg:github/next-ai-draw-ioOther threatsAffected
  • >=0.2.1 <=0.4.16
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, users should avoid clicking on untrusted links containing the mcp query parameter and consider implementing web application firewall rules to detect and block suspicious input patterns targeting this parameter.

Description

Next AI Draw.io versions 0.2.1 through 0.4.16 contain a reflected cross-site scripting (XSS) vulnerability in the mcp query parameter. This parameter is interpolated into HTML and JavaScript without proper escaping, allowing attackers to craft malicious URLs that execute arbitrary JavaScript in the localhost origin. This can lead to exfiltration of diagram sessions and API data. The vulnerability has a medium severity with a CVSS score of 5.1. No official patch or remediation guidance is currently available.

References

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