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.comAnalysed#919859 | Valid | Cross-site Scripting | Medium | 2020-07-21 | – | 26 |
| Unrestricted File Upload on https://app.lemlist.comAnalysed#722919 | Valid | File and Path Handling | Medium | 2020-04-01 | – | 24 |
| SSRF in img.lemlist.com that leads to Localhost Port ScanningAnalysed#783392 | Valid | Server-Side Request Forgery | Medium | 2020-05-28 | – | 23 |
| stored xss via Campaign Name.#923679 | Valid | Cross-site Scripting | Medium | 2020-07-21 | – | 11 |
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 (4,182 analysed so far), which can be wrong. Data as of 2026-11-15.