Slack · disclosed reports
Misconfiguration and Insecure Design
13 disclosed reports · $400 paid
Every dot is a report; the named ones are the most upvoted. Bright dots were paid a bounty. Reports open on HackerOne.
Open Slack on HackerOne- reports
- 13
- paid a bounty
- 3
Every one of the 13 is a mark on the map. Named now: 1 to 13, most upvoted first.
- Stealing xoxs-tokens using weak postMessage / call-popup redirect to current team domain
- Linux Desktop application slack executable does not use pie / no ASLR
- Race Condition in account survey
- [Screenhero] Subdomain takeover
- Possibility to freeze/crash the host system of all Slack Desktop users easily
- Broken Authentication (including Slack OAuth bugs)
- RC4 cipher suites detected on status.slack.com
- Password Policy issue (Weak Protect)
- Content Spoofing all Integrations in https://team.slack.com/services/new/
- User impersonation is possible with incoming webhooks
- Content Spoofing
- HTTP Strict Transport Policy not enabled on newly made accounts
- Content spoofing at Stripe Integrations
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.