CVE-2026-117538

LOW CVSS 4.0: 2.1
Updated Oct 27, 2026
Redaxo
Parameter Value
CVSS 2.1 (LOW)
Affected Versions before 5.21.0
Fixed In 5.21.0
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Redaxo
Public PoC No

REDAXO before 5.21.0 contains a reflected cross-site scripting vulnerability in the backend packages API, where the function parameter is concatenated into an error message rendered without HTML escaping. Attackers can lure an authenticated backend user to a crafted link containing a valid CSRF token, executing JavaScript that performs same-origin actions or reads DOM data.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Redaxo Redaxo
cpe:2.3:a:redaxo:redaxo:*:*:*:*:*:*:*:*
— 5.21.0