Bug bounty reports15,219
Publicly disclosed HackerOne reports, with the platform's own outcome and severity.
| Report | Status | Weakness | Severity | Disclosed | Bounty | Votes |
|---|---|---|---|---|---|---|
| Udemy s3 storage can be used by an attacker personal website because of missing CSRF Token#172707 | Informative | Cross-Site Request Forgery | – | 2017-01-05 | – | 1 |
| CSRF Token Design Flaw#216161 | Informative | Cross-Site Request Forgery | None | 2017-08-28 | – | 1 |
| Weak Password#256663 | Informative | Misconfiguration and Insecure Design | None | 2017-08-28 | – | 1 |
| Violation of secure design principle#256665 | Informative | Misconfiguration and Insecure Design | None | 2017-08-17 | – | 1 |
| CSRF Token#257237 | Informative | Cross-Site Request Forgery | – | 2017-08-17 | – | 1 |
| sweet32#217431 | Informative | Cryptography | None | 2017-05-04 | – | 2 |
| Showing Up Source Code#135620 | Informative | No weakness recorded | – | 2017-05-04 | – | 3 |
| Csrf on creating course#137008 | Informative | Cross-Site Request Forgery | – | 2017-01-10 | – | 3 |
| Critical : Malware and XSS file can be uploaded and executed on udemy#172694 | Informative | Cross-site Scripting | – | 2017-01-10 | – | 3 |
| Content Spoofing in udemy#172711 | Valid | Misconfiguration and Insecure Design | Low | 2017-07-23 | – | 4 |
| No password length restriction#258879 | Informative | Authentication | None | 2017-08-28 | – | 4 |
| Subdomain Takeover at Landing.udemy.com#208719 | Valid | Access Control | Low | 2017-03-30 | – | 9 |
| CSRF in Udemy.com#109839 | Informative | Cross-Site Request Forgery | – | 2017-01-10 | – | 11 |
| AWS S3 bucket writable for authenticated aws user#131468 | Valid | Authentication | – | 2017-01-05 | – | 13 |
| Jenkins#181849 | Valid | No weakness recorded | High | 2017-01-10 | – | 13 |
| Able to view others' gifts on /gift/share URL, giftId is predictable, and easy to manipulateAnalysed#119166 | Valid | Authentication | – | 2017-03-26 | – | 16 |
| Completed Compromise & Source Code Disclosure via Exposed Jenkins Dashboard at https://jenkins101.udemy.comAnalysed#182104 | Valid | Command and Code Injection | High | 2017-06-17 | – | 63 |
Status and severity are HackerOne's. “Access stated” is what the title says; “Access needed” and techniques come from CyberSIXT's analysis of the public report, where there is one, which can be wrong. Data as of 2026-11-15.