# CVE-2025-63830: Cross-site scripting in n/a

> An attacker can execute arbitrary scripts in the victim's browser by uploading a malicious SVG file via the CKFinder file upload feature.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Nov 2025
- **Updated:** 14 Nov 2025
- **Also known as:** GHSA-2xcq-fmvr-mmpw

## What is CVE-2025-63830?

CVE-2025-63830 is a medium-severity cross-site scripting vulnerability in n/a, published on 14 Nov 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2025-63830?

It affects 1 product.


Products: Cksource Ckfinder.

## How do I fix CVE-2025-63830?

No fix has been published for CVE-2025-63830 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-63830 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63830 exists.

Public exploit code:

- 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. (github_poc): https://github.com/Shubham03007/CVE-2025-63830

## Other vulnerabilities in n/a

- [CVE-2019-15862](https://insights.sbomify.com/CVE-2019-15862/): File upload in n/a (high 7.5)
- [CVE-2019-15891](https://insights.sbomify.com/CVE-2019-15891/): Information disclosure in n/a (medium 5.3)
- [CVE-2016-20023](https://insights.sbomify.com/CVE-2016-20023/): Path traversal in CKFinder (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-63830 and fix it if it is affected.

What it is: CVE-2025-63830 is a medium-severity cross-site scripting vulnerability in n/a, published on 14 Nov 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63830 exists.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-63830/ (Markdown: https://insights.sbomify.com/CVE-2025-63830/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-63830
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-63830
- OSV: https://osv.dev/vulnerability/CVE-2025-63830

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-63830/
Summaries are generated and may contain mistakes; the official description above is the record.