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CVE-2023-4771

MediumPublished

Cross-Site Scripting vulnerability in CKSource CKEditor

Published: Nov 16, 2023
Updated: Oct 1, 2024
Assigning CNA: INCIBE
Evidence observed: Aug 4, 2026

Primary CVSS

6.1/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS probability estimate

0.9%

Low · next 30 days

Percentile: 57.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

A Cross-Site scripting vulnerability has been found in CKSource CKEditor affecting versions 4.15.1 and earlier. An attacker could send malicious javascript code through the /ckeditor/samples/old/ajax.html file and retrieve an authorized user's information.

Sources

CVE-2023-4771PoC
CVE-2023-4771 PoC CKEditor 4 Cross-site scripting (XSS) vulnerability in AJAX sample

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