CVE-2026-117533

Medium

Description

REDAXO from 5.18.0 before 5.21.4 contains a stored cross-site scripting vulnerability because rex_media_service moves uploaded SVG files into the public media folder before sanitizing them. Authenticated users with mediapool upload rights can race the sanitizer or exhaust memory limits to leave script-laden SVGs publicly served, executing scripts in victims' backend sessions.

SeverityMedium

CVSS4.4

Exploit probability—

Product

Redaxo Core

PublishedOct 27, 2026

First seenOct 27, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

redaxo core5.21.4 or later

Vendor advisories

github.com/redaxo/core/security/advisories/GHSA-2p3g-jr7p-qwwx

Affected products

Product	Affected versions	Fixed in
redaxo core	5.18.0 ≤ v < 5.21.4	5.21.4

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.