Basecamp · disclosed reports
Access Control
6 disclosed reports · $250 paid
Every dot is a report; the named ones are the most upvoted. Bright dots were paid a bounty. Reports open on HackerOne.
Open Basecamp on HackerOne- reports
- 6
- paid a bounty
- 1
Every one of the 6 is a mark on the map. Named now: 1 to 6, most upvoted first.
- Spam & Clearance checks disabled with existing referenced Message-ID
- Any installed app can force immediate logout and persistent DOS of authenticated Basecamp sessions via unprotected exported StartActivity
- Improper Access Control in `fizzy.do` import flow allows cross-tenant ActionText reference resolution and data disclosure
- Ordinary HEY user can make HEY originate authenticated mail from attacker-selected @hey.com addresses
- A third-party Basecamp OAuth token mints a full launchpad web session through GET /my/login_option
- Privilege Escalation leads to trash other users comment without having admin rights.
paid a bounty
Zoom in on the map and the dots under the middle of it are named where they are.
Data as of 2026-11-14. CVE List through 2026-11-14 · EPSS of 2026-11-13 · CISA KEV checked 2026-11-14. Sources: the CVE List, CISA KEV, EPSS, NVD, nuclei templates and public bug bounty data.