July 2, 2026
🫏Subscription Enforcement Bypass Leading to Unauthorized Full Application Access
الحمد لله الذي عَلَّمَ بالقلم، عَلَّمَ الإنسانَ ما لم يعلم، والصلاة والسلام على سيدنا محمد ﷺ

By 0xMo7areb 🥷
2 min read
Here we go ^_^
Target Overview
The target application uses a subscription-based model where users must have an active trial or paid plan to access the app.
Once a subscription expires, access to those features should be blocked until the user renews their plan.
While testing the application, I discovered a business logic issue that allowed expired users to continue using premium functionality without purchasing a subscription.
Have a plan → you can use the web app Plan expired → you can't use any feature or function in the web app
How I Found It
During testing, I was reviewing how the application handled expired subscriptions.
When attempting to access premium functionality using an expired account, the application correctly displayed a message indicating that the subscription had expired.
At first, everything looked normal.
However, after clicking with the restricted feature several times, I noticed that the application eventually allowed access even though the account was still expired.
This behavior seemed unusual, so I started testing other premium features and found that the same issue existed in the whole application.
Proof of Concept
- Log in using an account with an expired trial or subscription.
- Attempt to access the features and observe that the application displays a message indicating that the trial or subscription has expired.
-
Continue clicking or interacting with the restricted functionality multiple times.
-
Observe that the application eventually grants access despite the account having no active subscription.
-
Repeat the same behavior on additional premium or restricted functionalities.
-
Observe that the same bypass occurs across multiple areas of the application.
Result
The user gains unauthorized access to premium functionality without renewing or purchasing a subscription.
Impact
This issue allows users with expired subscriptions to continue accessing features that should only be available to paying customers.
Takeaway
No tools, no need for open burp … only open browser and click multiple times to be a premium user :)
Report Status
Let's Connect: x account || linkedin || facebook [new account]
"سُبْحَانَكَ اللَّهُمَّ وَبِحَمْدِكَ ، أَشْهَدُ أَنْ لا إِلَهَ إِلا أَنْتَ ، أَسْتَغْفِرُكَ وَأَتُوبُ إِلَيْكَ"