Medium

REDAXO CMS is vulnerable to XSS through its module management component

  • Disclosed: 25.11.2025
  • Updated: 11.10.2026 10:22

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.

Affected software

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PlatformPackageVulnerable versionsFixed in
Composer package redaxo/source < 5.20.1 5.20.1

References

CVSS score 4.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE)
CWE-79
Platform
Composer
Package
redaxo/source
Disclosed
25.11.2025
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-vqc7-7fj4-3fm3 - CC BY 4.0

Vulnerability history: redaxo/source

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (18) in the archive
Total entries
18
First → latest
02.2024 09.2026
Without a fix
3
Exploited in attacks
0

Severity breakdown

  • High 4
  • Medium 11
  • Low 3

Disclosures per year

  1. 2024: 3
  2. 2025: 7
  3. 2026: 8
Severity:
  1. REDAXO CMS is vulnerable to XSS through its module management component this entry
    Medium · 4.8 CVE-2025-64049 < 5.20.1 5.20.1
  2. High · 7.2 CVE-2024-25298 <= 5.15.1 no fix

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