High · published December 9, 2025
⚡ An unauthenticated attacker can easily disable CAPTCHA verification in 1Panel versions 2.0.13 and below — it's like letting someone sneak into a party without checking their invite! 🎉 Think of CAPTCHA as a bouncer at a nightclub checking IDs. If the bouncer stops paying attention or trusts a fake ID handed to him, anyone can waltz in and cause chaos. In this case, the attacker tricks the server into thinking they're legit, bypassing the bouncer altogether. This vulnerability is a heart-stopper! An attacker able to bypass CAPTCHA can flood the login page with automated attempts, significantly increasing the likelihood of account takeover (ATO) for users. With just a few clicks, they could potentially gain unauthorized access to sensitive data and wreak havoc.
Think of CAPTCHA as a bouncer at a nightclub checking IDs. If the bouncer stops paying attention or trusts a fake ID handed to him, anyone can waltz in and cause chaos. In this case, the attacker tricks the server into thinking they're legit, bypassing the bouncer altogether. This flaw exists because the server improperly trusts a client-controlled parameter, allowing an attacker to disable CAPTCHA protections without authentication. As a result, they can launch a barrage of automated login attempts without any barriers to entry.
This vulnerability is a heart-stopper! An attacker able to bypass CAPTCHA can flood the login page with automated attempts, significantly increasing the likelihood of account takeover (ATO) for users. With just a few clicks, they could potentially gain unauthorized access to sensitive data and wreak havoc. To secure your system, upgrade to version 2.0.14 immediately. Additionally, audit your parameters to ensure that no sensitive client-controlled values are trusted without proper validation. Regular security reviews can help catch these sneaky issues early! You've got this! By taking action now, you can ensure that your 1Panel installation is secure and protected. 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| fit2cloud/1panel | < 2.0.14 | 2.0.14 |