# CVE-2025-2748: Kentico Xperience stored cross-site scripting in multiple-file upload functionality

> Attackers can inject malicious scripts via file uploads in Kentico Xperience, leading to stored XSS and potential session hijacking.

- **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:** 24 Mar 2025
- **Updated:** 27 Dec 2025
- **Also known as:** GHSA-fx68-23vp-xpxr

## What is CVE-2025-2748?

CVE-2025-2748 is a medium-severity cross-site scripting vulnerability in Kentico Xperience, published on 24 Mar 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

The Kentico Xperience application does not fully validate or filter files uploaded via the multiple-file upload functionality, which allows for stored XSS.This issue affects Kentico Xperience through 13.0.178.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2025-2748?

It affects 1 product.


Products: Kentico Xperience.

## How do I fix CVE-2025-2748?

No fix has been published for CVE-2025-2748 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-2748 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-2748 exists.

Public exploit code:

- PoC for CVE-2025-2748 - Unauthenticated ZIP file upload with embedded SVG for XSS (github_poc): https://github.com/xirtam2669/Kentico-Xperience-before-13.0.178---XSS-POC
- Kentico Xperience CMS - Unauthenticated Stored XSS (nuclei): http/cves/2025/CVE-2025-2748.yaml

## Other vulnerabilities in Kentico Xperience

- [CVE-2025-2746](https://insights.sbomify.com/CVE-2025-2746/): Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel (critical 9.8, exploited in the wild)
- [CVE-2025-2747](https://insights.sbomify.com/CVE-2025-2747/): Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel (critical 9.8, exploited in the wild)
- [CVE-2019-10068](https://insights.sbomify.com/CVE-2019-10068/): Kentico Xperience Deserialization of Untrusted Data (critical 9.8, exploited in the wild)
- [CVE-2025-2749](https://insights.sbomify.com/CVE-2025-2749/): Kentico Xperience Path Traversal (high 7.2, exploited in the wild)
- [CVE-2017-17736](https://insights.sbomify.com/CVE-2017-17736/): Missing authorization in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-2748 and fix it if it is affected.

What it is: CVE-2025-2748 is a medium-severity cross-site scripting vulnerability in Kentico Xperience, published on 24 Mar 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-2025-2748 exists.

Affected product: Kentico Xperience. 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-2025-2748/ (Markdown: https://insights.sbomify.com/CVE-2025-2748/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-2748
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-2748
- OSV: https://osv.dev/vulnerability/CVE-2025-2748

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-2748/
Summaries are generated and may contain mistakes; the official description above is the record.