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Bug bounty reports15,219

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

Program:CoinMate.io
Status:Valid
Clear
Severity
Weakness
Year
Bounty paid1
Access stated
Access needed
Technique
Clear filters3 of 15,219 reports
Disclosed bug bounty reports
ReportStatusWeaknessSeverityDisclosedBountyVotes
HMAC signature verification omits endpoint and payload allowing request forgery on CoinMate APIAnalysed#3670955ValidCryptographyLow2026-05-20–66
POST /api/bitcoinWithdrawalFees returns financial data without authentication despite being documented as a USER OPERATION (private endpoint)Analysed#3676308ValidAuthenticationMedium2026-05-20–93
Adding phone number to profile By OTP brute forcingAnalysed#3265780ValidInformation DisclosureMedium2026-08-08$100114

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 (2,942 analysed so far), which can be wrong. Data as of 2026-11-15.