CVE-2026-117535

MEDIUM CVSS 4.0: 5.1
Updated Oct 27, 2026
Redaxo
Parameter Value
CVSS 5.1 (MEDIUM)
Affected Versions before 5.21.3
Fixed In 5.21.3
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Redaxo
Public PoC No

REDAXO before 5.21.3 contains a reflected cross-site scripting vulnerability in the backend media pool detail page, where the opener_link parameter is rendered without HTML escaping. Unauthenticated attackers can lure logged-in backend users with media permissions into clicking a crafted link. The injected script can then read the CSRF token and perform actions with the victim's permissions, including code execution via template or module edits when the victim is an administrator.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Active
User action required

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Redaxo Redaxo
cpe:2.3:a:redaxo:redaxo:*:*:*:*:*:*:*:*
— 5.21.3