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Bug bounty reports15,219

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

Program:Nextcloud
Status
Severity:None
Clear
Weakness
Year
Bounty paid0
Access stated
  • No account0
  • A user account0
  • Admin or privileged0
Access needed:A user account
Technique
Clear filters3 of 15,219 reports
Disclosed bug bounty reports
ReportStatusWeaknessSeverityDisclosedBountyVotes
SMTP header injection via C-escape `\r` in the recipient display nameAnalysed#3913007ValidMemory CorruptionNone2026-10-18–23
Self XSS when sending HTML as a comment in the Deck appAnalysed#2058556ValidCross-site ScriptingNone2024-01-18–20
Persistent SMTP header injection via identity `organization` / `name`Analysed#3913012ValidMemory CorruptionNone2026-09-18–19

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.