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CVE-2025-63830

MediumPublished

CKFinder 1.4.3 is vulnerable to Cross Site Scripting (XSS) in the File Upload function. An attacker can upload a crafted SVG containing active content.

Published: Nov 14, 2025
Updated: Nov 14, 2025
Assigning CNA: mitre
Evidence observed: Aug 8, 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

0.2%

Low · next 30 days

Percentile: 16.4%
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

CKFinder 1.4.3 is vulnerable to Cross Site Scripting (XSS) in the File Upload function. An attacker can upload a crafted SVG containing active content.

Sources

CVE-2025-63830PoC
Identified a Stored Cross-Site Scripting (XSS) vulnerability in CKFinder v1.4.3 via malicious SVG file upload leading to script execution upon file preview.

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