Bug bounty reports15,219
Publicly disclosed HackerOne reports, with the platform's own outcome and severity.
| Report | Status | Weakness | Severity | Disclosed | Bounty | Votes |
|---|---|---|---|---|---|---|
| Stored XSS in app.lemlist.com#928816 | Valid | Cross-site Scripting | – | 2020-07-23 | – | 3 |
| CVE-2019-19935 - DOM based XSS in the froala editor#938683 | Valid | Cross-site Scripting | – | 2020-07-24 | – | 10 |
| stored xss via Campaign Name.#923679 | Valid | Cross-site Scripting | – | 2020-07-21 | – | 11 |
| Clickjacking at app.lemlist.com#1574017 | Valid | Misconfiguration and Insecure Design | – | 2022-05-20 | – | 13 |
| Security misconfiguration#1486327 | Valid | Misconfiguration and Insecure Design | – | 2022-05-16 | – | 15 |
| Stored XSS at [ █████ ] in " LINKEDIN URL" Field.#932557 | Valid | Cross-site Scripting | – | 2020-07-24 | – | 18 |
| [app.lemlist.com] Improper handling of payment lead to bypass payment#1420697 | Valid | Input Validation and Logic | – | 2022-05-17 | – | 18 |
| SSRF in img.lemlist.com that leads to Localhost Port Scanning#783392 | Valid | Server-Side Request Forgery | – | 2020-05-28 | – | 23 |
| Unrestricted File Upload on https://app.lemlist.com#722919 | Valid | File and Path Handling | – | 2020-04-01 | – | 24 |
| stored xss in app.lemlist.com#919859 | Valid | Cross-site Scripting | – | 2020-07-21 | – | 26 |
| Authentication Token Theft via Open Redirect in Callback URL Parameter#3419636 | Valid | Authentication | Critical | 2025-11-14 | – | 60 |
| Unauthorized Password Reset Allows Account Takeover Across Tenant Boundaries#3378635 | Valid | No weakness recorded | High | 2025-11-07 | – | 65 |
| Authentication Bypass in Subscription Management Endpoint#3417162 | Valid | Insecure Direct Object Reference | Critical | 2025-11-17 | – | 68 |
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 (549 analysed so far), which can be wrong. Data as of 2026-11-14.