Slack · disclosed reports
Server-Side Request Forgery
5 disclosed reports · $3,500 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
- 5
- paid a bounty
- 1
Every one of the 5 is a mark on the map. Named now: 1 to 5, most upvoted first.
- TURN server allows TCP and UDP proxying to internal network, localhost and meta-data services
- Header modification results in disclosure of Slack infra metadata to unauthorized parties
- SSRF in api.slack.com, using slash commands and bypassing the protections.
- Bypass of the SSRF protection in Event Subscriptions parameter.
- Internal SSRF bypass using slash commands at api.slack.com
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.