High · published November 20, 2025
⚠️ A single misconfigured endpoint in LimeSurvey 6.13.0 can lead to a dizzying loop of infinite redirects! This glitch is like a never-ending carnival ride that leaves your server gasping for breath. 🎢 Think of it as a traffic intersection without a traffic light—cars keep going around in circles, causing gridlock that nobody can escape from. Just like drivers stuck in the loop, your server can get overwhelmed, leading to service degradation or crashes. This vulnerability can be exploited to launch a Denial of Service (DoS) attack, which means users might find themselves unable to access the system entirely. Imagine your service crashing under the weight of endless requests, leaving frustrated users in the lurch and your reputation in tatters!
Think of it as a traffic intersection without a traffic light—cars keep going around in circles, causing gridlock that nobody can escape from. Just like drivers stuck in the loop, your server can get overwhelmed, leading to service degradation or crashes. The issue lies in the /optout endpoint of LimeSurvey 6.13.0, which causes infinite HTTP redirects when accessed directly. As a result, both server resources and client browser stability are jeopardized, leading to significant downtime.
This vulnerability can be exploited to launch a Denial of Service (DoS) attack, which means users might find themselves unable to access the system entirely. Imagine your service crashing under the weight of endless requests, leaving frustrated users in the lurch and your reputation in tatters! To mitigate this, update LimeSurvey to the latest version as soon as possible. Additionally, implement strict rate limiting and monitor your server logs for unusual activity. Regularly auditing your endpoints for similar pitfalls can help keep your service robust! You've got this! Just follow these steps to get your LimeSurvey back on track and running smoothly. 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| limesurvey/limesurvey | all versions | — |