Medium severity · published Nov 14, 2025
CVE-2025-63830
CKFinder 1.4.3 is vulnerable to Cross Site Scripting (XSS) in the File Upload function
6.1
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CK
Ckfinder · Cksource
1.4.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-63830
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-63830
Product
https://ckeditor.com/ckfinder/changelog/
Exploit
https://github.com/Shubham03007/CVE-2025-63830/blob/main/README.md
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