# CVE-2023-44383: October CMS stored XSS by authenticated backend user with improper configuration

> Authenticated users can inject stored XSS via SVG files in the media manager, potentially compromising other users' sessions.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 29 Nov 2023
- **Updated:** 5 Jun 2025
- **Also known as:** GHSA-rvx8-p3xp-fj3p

## What is CVE-2023-44383?

CVE-2023-44383 is a medium-severity cross-site scripting vulnerability in Octobercms October, published on 29 Nov 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

October is a Content Management System (CMS) and web platform to assist with development workflow. A user with access to the media manager that stores SVG files could create a stored XSS attack against themselves and any other user with access to the media manager when SVG files are supported. This issue has been patched in version 3.5.2.

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

## Which versions are affected by CVE-2023-44383?

2 open source packages ship an affected version, including october/system. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `october/system` | Packagist | From 3.0.0 | 3.5.2 |
| `october/system` | Packagist | From 3.0.0 | 3.5.2 |

Products: Octobercms October.

## How do I fix CVE-2023-44383?

Upgrade october/system to 3.5.2 or later.

## Is CVE-2023-44383 being exploited?

There is no known exploitation of CVE-2023-44383 in the wild and no public exploit code.

## Other vulnerabilities in Octobercms October

- [CVE-2021-32648](https://insights.sbomify.com/CVE-2021-32648/): October CMS Improper Authentication (high 8.2, exploited in the wild)
- [CVE-2021-3311](https://insights.sbomify.com/CVE-2021-3311/): October CMS Session ID not invalidated after logout (critical 9.8)
- [CVE-2017-1000194](https://insights.sbomify.com/CVE-2017-1000194/): October CMS File Upload Vulnerability (critical 9.8)
- [CVE-2017-1000196](https://insights.sbomify.com/CVE-2017-1000196/): Code injection in n/a (critical 9.8)
- [CVE-2017-1000197](https://insights.sbomify.com/CVE-2017-1000197/): Path traversal in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-44383 and fix it if it is affected.

What it is: CVE-2023-44383 is a medium-severity cross-site scripting vulnerability in Octobercms October, published on 29 Nov 2023. 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-2023-44383 in the wild and no public exploit code.

Affected packages and fixed versions:
- october/system (Packagist): affected from 3.0.0; fixed in 3.5.2
- october/system (Packagist): affected from 3.0.0; fixed in 3.5.2

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-2023-44383/ (Markdown: https://insights.sbomify.com/CVE-2023-44383/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-44383
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-44383
- OSV: https://osv.dev/vulnerability/CVE-2023-44383

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-44383/
Summaries are generated and may contain mistakes; the official description above is the record.