CVE-2022-3223Network attack vector

Stored script execution via unsafe math rendering

Published Sep 16, 2022 · Updated Aug 3, 2024

Stored XSS in draw.io before 20.3.1 allows remote attackers to execute script when a user opens a crafted diagram containing math. Editor.js loads MathJax TeX and AsciiMath processing without the ui/safe extension, allowing unsafe diagram-supplied math content to reach the renderer. Exploitation requires user interaction and executes script in the draw.io context, exposing data available to that application.

CVSS severity6.1
Medium
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in draw.io before 20.3.1 allows remote attackers to execute script when a user opens a crafted diagram containing math. Editor.js loads MathJax TeX and AsciiMath processing without the ui/safe extension, allowing unsafe diagram-supplied math content to reach the renderer. Exploitation requires user interaction and executes script in the draw.io context, exposing data available to that application.

The record

CVE
CVE-2022-3223
Published
Sep 16, 2022
Updated
Aug 3, 2024
Vendor
draw.io Ltd
Product
draw.io
Classifications
CWE-79, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <20.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

draw.io Ltd · draw.ioversion=unspecified <20.3.1

Published CVSS scores

4.3huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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