Bug bounty reports15,219
Publicly disclosed HackerOne reports, with the platform's own outcome and severity.
| Report | Status | Weakness | Severity | Disclosed | Bounty | Votes |
|---|---|---|---|---|---|---|
| Completed Compromise & Source Code Disclosure via Exposed Jenkins Dashboard at https://jenkins101.udemy.com#182104 | Valid | Command and Code Injection | – | 2017-06-17 | – | 63 |
| [affiliates.udemy.com] Wordpress user admin information discloure#370777 | Valid | Information Disclosure | – | 2019-04-28 | – | 60 |
| [engineering.udemy.com] - Subdomain Takeover (ghost.io)#368119 | Valid | Access Control | – | 2018-06-27 | – | 33 |
| S3 bucket unnecessarily discloses permissions#330135 | Valid | Access Control | – | 2019-04-26 | – | 27 |
| Subdomain Takeover (and Stored XSS) via Trailing Dot at https://coding-exercises.udemy.com#223625 | Valid | No weakness recorded | – | 2018-05-10 | – | 19 |
| Able to view others' gifts on /gift/share URL, giftId is predictable, and easy to manipulate#119166 | Valid | Authentication | – | 2017-03-26 | – | 16 |
| Jenkins#181849 | Valid | No weakness recorded | – | 2017-01-10 | – | 13 |
| AWS S3 bucket writable for authenticated aws user#131468 | Valid | Authentication | – | 2017-01-05 | – | 13 |
| CSRF in Udemy.com#109839 | Informative | Cross-Site Request Forgery | – | 2017-01-10 | – | 11 |
| Ability to add pishing links in discusion ," Bypassing uneductional Links add "#62301 | Valid | Information Disclosure | – | 2016-07-09 | – | 10 |
| Subdomain Takeover at Landing.udemy.com#208719 | Valid | Access Control | – | 2017-03-30 | – | 9 |
| teach.udemy.com log poison vulnerability through wordpress debug.log being publically available#60058 | Valid | Command and Code Injection | – | 2015-06-09 | – | 8 |
| NON VALIDATION OF SESSIONS AFTER PASSWORD CHANGE#164239 | Duplicate | Authentication | – | 2016-09-16 | – | 6 |
| Stored XSS at Udemy#132602 | Not checked yet | Cross-site Scripting | – | – | $50 | 5 |
| Extremely high Course rating values could be set in order to make really high Average rating of the course. Negative values could be set to.#73808 | Valid | Misconfiguration and Insecure Design | – | 2015-09-25 | – | 5 |
| No password length restriction#258879 | Informative | Authentication | – | 2017-08-28 | – | 4 |
| Content Spoofing in udemy#172711 | Valid | Misconfiguration and Insecure Design | – | 2017-07-23 | – | 4 |
| Authentication Data are not Clearing#119262 | Valid | Authentication | – | 2016-04-13 | – | 4 |
| Critical : Malware and XSS file can be uploaded and executed on udemy#172694 | Informative | Cross-site Scripting | – | 2017-01-10 | – | 3 |
| Csrf on creating course#137008 | Informative | Cross-Site Request Forgery | – | 2017-01-10 | – | 3 |
| Showing Up Source Code#135620 | Informative | No weakness recorded | – | 2017-05-04 | – | 3 |
| XSS Vulnerability#87588 | Valid | Cross-site Scripting | – | 2015-11-09 | – | 3 |
| XSS on https://www.udemy.com/asset/export.html#62400 | Valid | Cross-site Scripting | – | 2015-10-08 | – | 3 |
| Misconfigured SPF Record Flag#60260 | Informative | Misconfiguration and Insecure Design | – | 2016-02-22 | – | 3 |
| xss profile#60016 | Valid | Cross-site Scripting | – | 2015-07-16 | – | 3 |
| sweet32#217431 | Informative | Cryptography | – | 2017-05-04 | – | 2 |
| Reflected XSS and/or malicious redirection via JWPlayer 6 configuration modification#95640 | Informative | Cross-site Scripting | – | 2016-02-24 | – | 2 |
| Multiple sub domain are vulnerable because of leaking full path#62778 | Valid | Information Disclosure | – | 2015-06-25 | – | 2 |
| leak receipt of another user#61371 | Valid | Information Disclosure | – | 2015-11-13 | – | 2 |
| CSRF Token#257237 | Informative | Cross-Site Request Forgery | – | 2017-08-17 | – | 1 |
| Violation of secure design principle#256665 | Informative | Misconfiguration and Insecure Design | – | 2017-08-17 | – | 1 |
| Weak Password#256663 | Informative | Misconfiguration and Insecure Design | – | 2017-08-28 | – | 1 |
| CSRF Token Design Flaw#216161 | Informative | Cross-Site Request Forgery | – | 2017-08-28 | – | 1 |
| 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 |
| information disclosure#78765 | Valid | Information Disclosure | – | 2016-02-07 | – | 1 |
| xss on autoserch#61367 | Valid | Cross-site Scripting | – | 2015-07-08 | – | 1 |
| Stored XSS#112025 | Informative | Cross-site Scripting | – | 2016-02-22 | – | – |
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 (227 analysed so far), which can be wrong. Data as of 2026-11-14.