# CVE-2024-45965: Cross-site scripting in Contao

> An attacker can execute arbitrary scripts in a victim's browser by uploading a malicious SVG document to the Contao CMS.

- **Severity:** Medium 6.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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:** Not needed
- **Fix available:** No
- **Published:** 2 Oct 2024
- **Updated:** 27 Aug 2025

## What is CVE-2024-45965?

CVE-2024-45965 is a medium-severity cross-site scripting vulnerability in Contao, published on 2 Oct 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Contao before 5.5.6 allows XSS via an SVG document. This affects (in contao/core-bundle in Composer) 4.x before 4.13.54, 5.0.x through 5.3.x before 5.3.30, and 5.4.x and 5.5..x before 5.5.6.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2024-45965?

It affects 1 product.


Products: Contao Contao.

## How do I fix CVE-2024-45965?

No fix has been published for CVE-2024-45965 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-45965 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-45965 exists.

## Other vulnerabilities in Contao

- [CVE-2022-26265](https://insights.sbomify.com/CVE-2022-26265/): Remote Code Execution in Contao Managed Edition (critical 9.8)
- [CVE-2019-11512](https://insights.sbomify.com/CVE-2019-11512/): Contao SQL injection in the file manager (critical 9.8)
- [CVE-2012-4383](https://insights.sbomify.com/CVE-2012-4383/): Contao core SQL Injection Vulnerability (high 8.8)
- [CVE-2019-19745](https://insights.sbomify.com/CVE-2019-19745/): Unrestricted file uploads in Contao (high 8.8)
- [CVE-2024-28235](https://insights.sbomify.com/CVE-2024-28235/): Contao possible cookie sharing with external domains while checking protected pages for broken links (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-45965 and fix it if it is affected.

What it is: CVE-2024-45965 is a medium-severity cross-site scripting vulnerability in Contao, published on 2 Oct 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-45965 exists.

Affected product: Contao. 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-2024-45965/ (Markdown: https://insights.sbomify.com/CVE-2024-45965/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-45965
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-45965
- OSV: https://osv.dev/vulnerability/CVE-2024-45965

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-45965/
Summaries are generated and may contain mistakes; the official description above is the record.