CVE-2024-43411Network attack vector

Cross-site scripting via unnormalized version responses

Published Aug 21, 2024 · Updated Aug 22, 2024

Cross-site scripting in CKSource CKEditor 4 4.22.0 through 4.24.0-lts allows attackers to execute script via version notifications. The version-check code retained latestVersion and secureVersion values from cke4.ckeditor.com and inserted the raw strings into notification, console, and dialog messages. Exploitation requires version notifications, user interaction, and attacker control of that domain; injected script runs in the embedding page's origin.

CVSS severity3.1
Low
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site scripting in CKSource CKEditor 4 4.22.0 through 4.24.0-lts allows attackers to execute script via version notifications. The version-check code retained latestVersion and secureVersion values from cke4.ckeditor.com and inserted the raw strings into notification, console, and dialog messages. Exploitation requires version notifications, user interaction, and attacker control of that domain; injected script runs in the embedding page's origin.

The record

CVE
CVE-2024-43411
Published
Aug 21, 2024
Updated
Aug 22, 2024
Vendor
CKSource
Product
CKEditor 4
Classifications
CWE-79, T1189
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 22, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 4.22.0, < 4.25.0-lts

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

CKSource · CKEditor 4version=>= 4.22.0, < 4.25.0-lts

Published CVSS scores

3.1GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:R/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo