CVE-2025-27412: redaxo XSS — Exploit & Fix

Description

REDAXO is a PHP-based CMS. In Redaxo from 5.0.0 through 5.18.2, the rex-api-result parameter is vulnerable to Reflected cross-site scripting (XSS) on the page of AddOns. This vulnerability is fixed in 5.18.3.

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CVSS v3.1 Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
redaxo	redaxo	5.0 — 5.18.3

References

Advisories & Patches

https://github.com/redaxo/redaxo/security/advisories/GHSA-8366-xmgf-334f

Exploits

https://github.com/redaxo/redaxo/security/advisories/GHSA-8366-xmgf-334f

Frequently Asked Questions

What is CVE-2025-27412? +

REDAXO is a PHP-based CMS. In Redaxo from 5.0.0 through 5.18.2, the rex-api-result parameter is vulnerable to Reflected cross-site scripting (XSS) on the page of AddOns. This vulnerability is fixed in 5.18.3. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2025-27412? +

CVE-2025-27412 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-27412? +

CVE-2025-27412 affects products from redaxo, specifically: redaxo. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-27412? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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