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GMX bug bounty programs

gmx.net Updated

GMX runs one public program: a self-hosted bug bounty.

Top reward
Not published
Programs
1
1 pays cash
Targets in scope
8
3 types
Last change
None yet
Tracked since Nov 2026

Where to report

The one public program GMX runs.

  • GMX

    Self-hosted · Bug bounty

    Open

    Top reward

    Not published
    Safe harbor
    Partial

Amounts are the top reward per severity in the currency each program pays. First response is the platform's measured average when it publishes one, else what the policy promises.

What is in scope

8 targets. 5 excluded.

  • gmx.net

    Domains

  • mail.com

    Domains

  • Logged-in web apps that process customer data, such as email, calendar and cloud storage, including their authentication

    Web

  • Authentifizierungssysteme

    Products and areas

  • Cloud-Speicher

    Products and areas

  • E-Mail

    Products and areas

  • Kalender

    Products and areas

  • Webanwendungen im eingeloggten Zustand, von denen Kundendaten verarbeitet werden

    Products and areas

No target matches. Try part of a host name, such as the company name.

Out of scope 5

Don't test these. A program can exclude a host another program covers; the program you report to decides.

  • Malware-bezogene Themen (z. B. versenden von Malware)

  • Produkt-Features (zum Beispiel Datenaustausch, SPAM-bezogene Themen)

  • Schwachstellen, die man nur mit einem physischen oder logischen Zugriff auf das Konto oder Gerät des Opfers ausnutzen kann (z. B. "Self-XSS")

  • Schwachstellen, die nicht direkt ausgenutzt werden können (z. B. fehlende Security Header oder Information Disclosure)

  • Schwachstellen, die nur die Verfügbarkeit von Diensten/Daten betreffen (z. B. "Logout-CSRF")

Recent changes

Reward and scope changes across every GMX program, newest first.

No changes recorded yet. New targets and reward moves show up here and in the RSS feed.

About this page

This page gathers every public program listed under gmx.net: platform programs, self-hosted policies and security.txt contacts. Each program's own policy decides what is in scope and what it pays; check it before you test.

Something wrong or missing? Report a correction.