# CVE-2025-63830: CKFinder 1.4.3 is vulnerable to Cross Site Scripting (XSS) in the File Upload function. An attacker can upload a…

Source: https://junglewise.ai/threats/cve-2025-63830-ckfinder-1-4-3-is-vulnerable-to-cross-site-scripting-xss-in-the  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-14  
License: CC BY 4.0 with a link back

CVE-2025-63830 · Severity: medium · CVSS 6.1 · Published 2025-11-14

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.

Vendors: [CKSource](https://junglewise.ai/threats/vendors/cksource).

## Quick answers

**Is CVE-2025-63830 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-63830 being exploited in the wild.

**How severe is CVE-2025-63830?** Medium severity, with a CVSS score of 6.1, published 14 November 2025.

**Which products and versions are affected?** CKSource Ckfinder. The advisory does not name versions.

**Is there a fix for CVE-2025-63830?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-63830?** Check whether you run CKSource Ckfinder. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- CKSource Ckfinder