CVE-2025-29448: Easy!Appointments Denial of Service (DoS) Vulnerability
Summary
CVE-2025-29448: Easy!Appointments Denial of Service (DoS). Affects alextselegidis/easyappointments versions < 1.5.1. No fix is published. How to fix ↓
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Background
Easy!Appointments is an open-source appointment scheduling software that allows users to manage bookings efficiently. It is designed for businesses that require a streamlined process for scheduling appointments. The software provides features such as calendar management, client notifications, and customizable booking forms. However, a flaw in its booking logic can lead to a denial of service, impacting its availability for legitimate users.
Vulnerability Detail
The vulnerability in Easy!Appointments v1.5.1 arises from a flaw in the booking logic that permits unauthenticated attackers to create appointments with excessively long durations. This can result in a denial of service (DoS) by blocking all future booking availability, effectively preventing legitimate users from making appointments. The issue is classified under CWE-20, indicating improper input validation, which allows attackers to exploit the system's handling of appointment durations.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, administrators can implement input validation on the appointment duration field to restrict excessively long values. This can be done by modifying the booking logic to enforce maximum duration limits, ensuring that users cannot create appointments that exceed a reasonable timeframe.
Conclusion
The CVE-2025-29448 vulnerability in Easy!Appointments poses a significant risk of denial of service due to improper handling of appointment durations. Users are advised to update their software to the latest version and implement input validation as a temporary measure to protect against potential exploitation.
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FAQ
The impact of this vulnerability is a denial of service, which prevents legitimate users from making appointments due to blocked availability.
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While a specific patched version is not mentioned, users should regularly check for updates to Easy!Appointments to ensure they are using the most secure version.
If an immediate update is not possible, implement input validation on appointment durations as a temporary workaround to mitigate the risk.
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References
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