Bug bounty reports15,219
Publicly disclosed HackerOne reports, with the platform's own outcome and severity.
| Report | Status | Weakness | Severity | Disclosed | Bounty | Votes |
|---|---|---|---|---|---|---|
| a very long name in hey.com can prevent anyone from accessing their contacts and probably can cause denial of serviceAnalysed#1018037 | Valid | Denial of Service | High | 2020-11-10 | $1,000 | 132 |
| Any installed app can force immediate logout and persistent DOS of authenticated Basecamp sessions via unprotected exported StartActivityAnalysed#3764217 | Valid | Access Control | Medium | 2026-07-04 | – | 104 |
| Attachments may be hijacked via AppCache+CookieBombing trick (bc3_production_blobs bucket)Analysed#403602 | Valid | Input Validation and Logic | High | 2020-11-26 | – | 57 |
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.