CVE-2026-117537

Medium

Description

REDAXO before 5.21.0 contains a reflected cross-site scripting vulnerability that allows authenticated attackers to inject scripts via the type parameter of the metainfo_default_fields_create API. Attackers can craft a link with a valid CSRF token and HTML payload that rex_view::message() renders unescaped, executing scripts in a victim's backend session.

SeverityMedium

CVSS4.1

Exploit probability—

ProductRedaxo/source

PublishedOct 27, 2026

First seenOct 27, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

redaxo/source5.21.0 or later

Vendor advisories

github.com/redaxo/core/security/advisories/GHSA-m662-8jrj-cw6v

Affected products

Product	Affected versions	Fixed in
redaxo/sourcePackagist	v < 5.21.0	5.21.0

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