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Bug bounty reports15,219

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

Program:Valve
Status
Severity
Weakness:Input Validation and Logic
Clear
Year
Bounty paid3
Access stated
  • No account0
  • A user account0
  • Admin or privileged0
Access needed
Technique
Clear filters4 of 15,219 reports
Disclosed bug bounty reports
ReportStatusWeaknessSeverityDisclosedBountyVotes
[Source Engine] Material path truncation leads to Remote Code ExecutionAnalysed#544096ValidInput Validation and LogicHigh2021-05-06$2,50060
Steam chat - trade offer presentation vulnerabilityAnalysed#745447ValidInput Validation and LogicMedium2020-02-19–60
[help.steampowered.com] Account takeover bruteforcing SteamGuardAnalysed#407971ValidInput Validation and LogicHigh2019-01-23$2,500112
Modify in-flight data to payment provider Smart2PayAnalysed#1295844ValidInput Validation and LogicCritical2021-08-10$7,500443

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 (4,365 analysed so far), which can be wrong. Data as of 2026-11-15.