Cloudflare Public Bug Bounty · disclosed reports
Cross-site Scripting
4 disclosed reports · $550 paid
Every dot is a report; the named ones are the most upvoted. Bright dots were paid a bounty. Reports open on HackerOne.
Open Cloudflare Public Bug Bounty on HackerOne- reports
- 4
- paid a bounty
- 1
Every one of the 4 is a mark on the map. Named now: 1 to 4, most upvoted first.
- `use-mcp`'s oauth2 process uses a window.open call with untrusted mcp server provided data allowing for code execution under the page using it
- [Variation of #3321406] YetAnother 1-Click Chaining of Self-XSS, Cookie Tossing and AntiCSRF Token Prediction leads to auto approval in AccessTempAuth
- AI Playground XSS to steal user-chat messages and access to connected MCP Server
- Second-Order XSS via javascript protocol in MCP Server Portal Apps leads to ATO
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.