Concrete5 5.7.3.1 - Multiple XSS
Overview #
Multiple Cross-site Scripting (XSS) vulnerabilities exist in Concrete5 CMS version 5.7.3.1. These vulnerabilities allow remote attackers to inject arbitrary web script or HTML.
Vulnerability Details #
Affected Versions: 5.7.3.1 and earlier
Root Cause: Insufficient input validation and output encoding on multiple parameters allows XSS attacks.
Exploitation Requirements #
- No authentication required for some vectors
- Victim must visit crafted URLs or pages
Impact #
Remote attackers can exploit these vulnerabilities to:
- Steal admin session cookies
- Perform actions on behalf of users
- Compromise the CMS installation
Proof of Concept #
Details available upon request.
Solution #
Upgrade to a patched version of Concrete5 that includes proper input sanitization and output encoding.