CVE-2026-116900

MEDIUM CVSS 4.0: 5.1
Updated Oct 27, 2026
Redaxo
Parameter Value
CVSS 5.1 (MEDIUM)
Affected Versions before 5.21.4
Fixed In 5.21.4
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Redaxo
Public PoC No

REDAXO before 5.21.4 contains a stored cross-site scripting vulnerability that allows content editors to inject HTML by storing unescaped values rendered by media, medialist, link and linklist widgets. Attackers can submit crafted REX_INPUT_MEDIA or REX_INPUT_LINK values that break out of the value attribute, executing script in administrators' backend sessions to hijack accounts.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
Passive
Minimal interaction

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:*:*:*:*:*:*:*:*
— 5.21.4