CVE-2026-97224Public exploitNetwork attack vectorHinoki check available

Cross-site scripting via unvalidated iframe HTML

Published Sep 24, 2026 · Updated Sep 24, 2026

Cross-site scripting in Excalidraw 0.18.0 through 0.18.1 allows remote attackers to execute script via an imported drawing. The imported-file restore path accepts customData.generationData.html without validation, and the renderer places that string into an iframe srcdoc document. A victim must import or receive a crafted scene; the script then runs in the embedding application's browser context, enabling content injection and phishing.

CVSS severityUnavailable
Unscored
EPSS probability0.26%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Cross-site scripting in Excalidraw 0.18.0 through 0.18.1 allows remote attackers to execute script via an imported drawing. The imported-file restore path accepts customData.generationData.html without validation, and the renderer places that string into an iframe srcdoc document. A victim must import or receive a crafted scene; the script then runs in the embedding application's browser context, enabling content injection and phishing.

The record

CVE
CVE-2026-97224
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
Excalidraw
Product
Excalidraw
Classifications
CWE-1021, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2026Record 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=0.18.0
  2. Affected versionversion=0.18.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Excalidraw · Excalidrawversion=0.18.0; version=0.18.1

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1021Improper Restriction of Rendered UI Layers or Frames
T1204.002Malicious File

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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