# CVE-2025-66403: FileRise Vulnerable to Stored XSS via SVG Upload

> Attackers can execute arbitrary JavaScript in victim browsers by uploading malicious SVG files to the FileRise web-based file manager.

- **Severity:** Medium 4.6 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 1 Dec 2025
- **Updated:** 2 Dec 2025
- **Also known as:** GHSA-qrcv-vjvf-fr29

## What is CVE-2025-66403?

CVE-2025-66403 is a medium-severity cross-site scripting vulnerability in error311 FileRise, published on 1 Dec 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 2.2.3, a stored cross-site scripting (XSS) vulnerability exists in the Filerise application due to improper handling of uploaded SVG files. The application accepts user-supplied SVG uploads without sanitizing or restricting embedded script content. When a malicious SVG containing inline JavaScript or event-based payloads is uploaded, it is later rendered directly in the browser whenever viewed within the application. Because SVGs are XML-based and allow scripting, they execute in the origin context of the application, enabling full stored XSS. This vulnerability is fixed in 2.2.3.

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

## Which versions are affected by CVE-2025-66403?

It affects 1 product.


Products: Filerise Filerise.

## How do I fix CVE-2025-66403?

No fix has been published for CVE-2025-66403 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-66403 being exploited?

There is no known exploitation of CVE-2025-66403 in the wild and no public exploit code.

## Other vulnerabilities in error311 FileRise

- [CVE-2025-68116](https://insights.sbomify.com/CVE-2025-68116/): FileRise vulnerable to Cross-Site Scripting (XSS) in SVG File Handling (high 8.9)
- [CVE-2026-33072](https://insights.sbomify.com/CVE-2026-33072/): FileRise: Default Encryption Key Enables Token Forgery and Config Decryption (high 8.2)
- [CVE-2026-33329](https://insights.sbomify.com/CVE-2026-33329/): Path traversal in FileRise (high 8.1)
- [CVE-2025-62509](https://insights.sbomify.com/CVE-2025-62509/): FileRise improper ownership/permission validation allowed cross-tenant file operations (high 8.1)
- [CVE-2025-62510](https://insights.sbomify.com/CVE-2025-62510/): FileRise insecure folder visibility via name-based mapping and incomplete ACL checks (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-66403 and fix it if it is affected.

What it is: CVE-2025-66403 is a medium-severity cross-site scripting vulnerability in error311 FileRise, published on 1 Dec 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-66403 in the wild and no public exploit code.

Affected product: error311 FileRise. 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-2025-66403/ (Markdown: https://insights.sbomify.com/CVE-2025-66403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-66403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-66403
- OSV: https://osv.dev/vulnerability/CVE-2025-66403

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-66403/
Summaries are generated and may contain mistakes; the official description above is the record.