Bug bounty reports15,219
Publicly disclosed HackerOne reports, with the platform's own outcome and severity.
| Report | Status | Weakness | Severity | Disclosed | Bounty | Votes |
|---|---|---|---|---|---|---|
| Weak rate limit for SIGN.PLUS email verification#1584569 | Valid | No weakness recorded | Low | 2022-06-21 | – | 3 |
| Waitlist bypass for accessing SIGN.PLUS Beta#1494308 | Valid | Access Control | Low | 2022-05-30 | – | 11 |
| Misconfigured rate limit at app.sign.plus/forgot_passwordAnalysed#1472394 | Valid | Input Validation and Logic | Low | 2022-03-25 | – | 25 |
| Misconfigured rate limit for SMS phone verification endpointAnalysed#1482919 | Valid | Input Validation and Logic | Medium | 2022-05-10 | – | 26 |
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 (4,614 analysed so far), which can be wrong. Data as of 2026-11-15.