Description
Vulnerability in LimeSurvey 6.13.0 in the endpoint /optout that causes infinite HTTP redirects when accessed directly. This behavior can be exploited to generate a Denegation of Service (DoS attack), by exhausting server or client resources. The system is unable to break the redirect loop, which can cause service degradation or browser instability.
Remediation
References
Related Vulnerabilities
MongoDb Improper Input Validation Vulnerability (CVE-2020-7925)
PHP Improper Link Resolution Before File Access ('Link Following') Vulnerability (CVE-2014-3981)
Squid Stack-based Buffer Overflow Vulnerability (CVE-2025-59362)
SharePoint Improper Control of Generation of Code ('Code Injection') Vulnerability (CVE-2025-49704)