CVE-2022-3873Public exploitNetwork attack vector

Script execution via tickets plugin CSS bypass

Published Nov 7, 2022 · Updated May 1, 2025

DOM cross-site scripting in draw.io before 20.5.2 allows remote attackers to execute script in a victim's browser through crafted content. The 20.5.2 patch identifies a CSS and Content Security Policy bypass in the tickets plugin, but the exact input-to-DOM operation is not public. No authentication is required; published assessments disagree on whether user interaction is required, so reachability depends on the deployed editor flow.

CVSS severity6.1
Medium
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM cross-site scripting in draw.io before 20.5.2 allows remote attackers to execute script in a victim's browser through crafted content. The 20.5.2 patch identifies a CSS and Content Security Policy bypass in the tickets plugin, but the exact input-to-DOM operation is not public. No authentication is required; published assessments disagree on whether user interaction is required, so reachability depends on the deployed editor flow.

The record

CVE
CVE-2022-3873
Published
Nov 7, 2022
Updated
May 1, 2025
Vendor
draw.io Ltd
Product
draw.io
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2022CVE publishedPublication date reported by the CVE source.
  2. May 1, 2025Record 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 <20.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

draw.io Ltd · draw.ioversion=unspecified <20.5.2

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.5huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

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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