Bug bounty reports15,219
Publicly disclosed HackerOne reports, with the platform's own outcome and severity.
| Report | Status | Weakness | Severity | Disclosed | Bounty | Votes |
|---|---|---|---|---|---|---|
| Link vulnerability leads to phishing attacks#66994 | Informative | No weakness recorded | – | 2015-07-13 | – | 1 |
| Deleting Teams implemenation#2975 | Informative | Authentication | – | 2014-08-21 | – | 2 |
| Open Redirect in Slack#4549 | Informative | Open Redirect | – | 2014-05-21 | – | 2 |
| TLS1/SSLv3 Renegotiation Vulnerability#5617 | Informative | No weakness recorded | – | 2014-08-14 | – | 2 |
| open redirect in https://slack.com#6035 | Informative | Open Redirect | – | 2014-05-31 | – | 2 |
| Unauthenticated Access to some old file thumbnails#145621 | Informative | Authentication | – | 2016-06-21 | – | 2 |
| Content Spoofing#2979 | Informative | Misconfiguration and Insecure Design | – | 2014-08-11 | – | 3 |
| User impersonation is possible with incoming webhooks#3722 | Informative | Misconfiguration and Insecure Design | – | 2014-04-10 | – | 3 |
| Session Fixation disclosing email address#2582 | Informative | Information Disclosure | – | 2014-03-31 | – | 7 |
| Remote file Inclusion - RFI in upload#14092 | Informative | Command and Code Injection | – | 2014-07-08 | – | 7 |
| Email enumeration#2766 | Informative | Information Disclosure | – | 2014-04-02 | – | 8 |
| Open redirect vulnerability#2731 | Informative | Open Redirect | – | 2014-04-06 | – | 11 |
| CSV export/import functionality allows administrators to modify member and message content of a workspace#1661310 | Informative | Access Control | None | 2022-09-28 | $250 | 11 |
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.