Bug bounty reports15,219
Publicly disclosed HackerOne reports, with the platform's own outcome and severity.
| Report | Status | Weakness | Severity | Disclosed | Bounty | Votes |
|---|---|---|---|---|---|---|
| [uchat.uberinternals.com] Mattermost doesn't check Origin in Websockets, which leads to the Critical Inforamation Leakage.Analysed#201326 | Valid | Cross-Site Request Forgery | Critical | 2023-03-23 | $2,000 | 50 |
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 (3,686 analysed so far), which can be wrong. Data as of 2026-11-15.