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Bug bounty reports15,219

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

Program:Nextcloud
Status
Severity
Weakness
Year:2018
Clear
Bounty paid4
Access stated
  • No account0
  • A user account0
  • Admin or privileged0
Access needed:A user account
Technique
Clear filters5 of 15,219 reports
Disclosed bug bounty reports
ReportStatusWeaknessSeverityDisclosedBountyVotes
OAuth2 Access Token and App Password Security VulnerabilityAnalysed#343111ValidCryptographyMedium2018-07-21–20
bypass of 2FAAnalysed#248656ValidAuthenticationHigh2018-07-29$75020
Authentication IssueAnalysed#146133ValidAuthentication–2018-10-25$5019
Registered users can change app password permissions for any userAnalysed#297751ValidInsecure Direct Object ReferenceLow2018-02-08$10018
Access control issue -- [Allow file system access not validated when using session auth]Analysed#388515ValidAccess ControlMedium2018-09-25$10017

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.