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Bug bounty reports15,219

Publicly disclosed HackerOne reports, with the platform's own outcome and severity.

Program:Cloudflare Public Bug Bounty
Status
Severity
Weakness:Injection and Smuggling
Clear
Year
Bounty paid2
Access stated
  • No account0
  • A user account0
  • Admin or privileged0
Access needed
  • No account0
  • A user account2
  • A privileged role0
  • Admin0
  • Physical or local access0
  • Not clear from the report0
Technique
Clear filters3 of 15,219 reports
Disclosed bug bounty reports
ReportStatusWeaknessSeverityDisclosedBountyVotes
HTTP Request Smuggling in Transform Rules using hexadecimal escape sequences in the concat() functionAnalysed#1478633ValidInjection and SmugglingCritical2022-05-16$6,000116
HTTP request smuggling with Origin Rules using newlines in the host_header action parameterAnalysed#1575912ValidInjection and SmugglingCritical2022-06-27$3,10046
YAML schema injection risk in Swagger UI via schema_url parameter at developers.cloudflare.com#2174818InformativeInjection and SmugglingLow2023-11-10–24

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.