CKFinder 1.4.3 is vulnerable to Cross Site Scripting (XSS) in the File Upload function.
Priority MEDIUM 60CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00266 18th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-63830
- 2026-10-03 Alias added: GHSA-2xcq-fmvr-mmpw
References
More CKSource Ckfinder vulnerabilities
- TI-2019-11922 An issue was discovered in CKFinder through 2.6.2.1. CVSS 3.1HIGH 7.5
- TI-2016-09199 Path traversal in CKSource CKFinder CVSS 3.1MEDIUM 6.5
- TI-2019-11943 An issue was discovered in CKFinder through 2.6.2.1 and 3.x through 3.5.0. CVSS 3.1MEDIUM 5.3
Sources
- CVE-2025-63830 · CVE Program
- CVE-2025-63830 · NVD
- FIRST EPSS
- GHSA-2xcq-fmvr-mmpw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences