Bug bounty reports15,219
Publicly disclosed HackerOne reports, with the platform's own outcome and severity.
| Report | Status | Weakness | Severity | Disclosed | Bounty | Votes |
|---|---|---|---|---|---|---|
| Spam & Clearance checks disabled with existing referenced Message-IDAnalysed#2012659 | Valid | Access Control | Low | 2026-01-21 | $250 | 123 |
| 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 |
| Improper Access Control in `fizzy.do` import flow allows cross-tenant ActionText reference resolution and data disclosureAnalysed#3543475 | Valid | Access Control | Low | 2026-04-14 | – | 53 |
| Ordinary HEY user can make HEY originate authenticated mail from attacker-selected @hey.com addresses#4035023 | Valid | Access Control | High | 2026-10-20 | – | 44 |
| A third-party Basecamp OAuth token mints a full launchpad web session through GET /my/login_optionAnalysed#3999856 | Valid | Access Control | High | 2026-10-30 | – | 33 |
| Privilege Escalation leads to trash other users comment without having admin rights.#1307943 | Valid | Access Control | Low | 2021-12-01 | – | 9 |
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.