Koppla Vulnerability Disclosure

generated: '2026-07-19'
method: searched
probe: true
source: https://security.koppla.de/
policy:
- https://security.koppla.de/
contact:
- lasse.steffen@koppla.de
security_txt: null
security_txt_note: 'No /.well-known/security.txt is published. www.koppla.de and
  security.koppla.de both return 404 for the path; my.koppla.de returns HTTP 200 but
  serves the single-page-app HTML shell for every path, so that 200 is a catch-all
  false positive and not an RFC 9116 document.'
bug_bounty: null
bug_bounty_note: No public bug bounty program (HackerOne, Bugcrowd, Intigriti) was
  found for koppla.
disclosure:
  channel: SafeBase trust center "Report issue" form
  advertised_control: Responsible Disclosure (listed under App Security)
  related_controls:
  - Application Penetration Testing
  - Pentest Report (gated document)
evidence:
- source: https://security.koppla.de/
  kind: trust-center
  quote: If you think you may have discovered a vulnerability, please send us a note.
    Report issue
- source: https://security.koppla.de/
  kind: trust-center
  quote: App Security - Responsible Disclosure
- source: https://security.koppla.de/
  kind: security-contact
  quote: If you have any further questions, please don't hesitate to get in touch with
    me at lasse.steffen@koppla.de