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FlowCrypt a.s. bug bounty programs

flowcrypt.com Updated

FlowCrypt a.s. runs one public program: a self-hosted bug bounty paying up to $5,000.

Top reward
$5,000
Self-hosted
Programs
1
1 pays cash
Targets in scope
23
7 types
Last change
None yet
Tracked since Nov 2026

Where to report

The one public program FlowCrypt a.s. runs.

  • FlowCrypt a.s.

    Self-hosted · Bug bounty

    Open

    Top reward

    $5,000
    KYC
    Required
    First response
    3 days promised

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

23 targets. 14 excluded.

  • flowcrypt.com

    Domains

  • flowcrypt.com/account

    Web

  • flowcrypt.com/attester

    Web

  • flowcrypt.com/me/[user]

    Web

  • Backend API

    APIs

  • flowcrypt.com/api

    APIs

  • Android App

    Android

  • flowcrypt-android

    Android

  • flowcrypt-ios

    Android

  • iOS App

    iOS

  • https://github.com/FlowCrypt/flowcrypt-android

    Source code

  • https://github.com/FlowCrypt/flowcrypt-attester-ts

    Source code

  • https://github.com/FlowCrypt/flowcrypt-backend

    Source code

  • https://github.com/FlowCrypt/flowcrypt-browser

    Source code

  • https://github.com/FlowCrypt/flowcrypt-ios

    Source code

  • https://github.com/FlowCrypt/flowcrypt-web

    Source code

  • https://github.com/pgpainless/pgpainless

    Source code

  • PGPainless Library

    Source code

  • Source Code

    Source code

  • Browser Extension

    Products and areas

  • Encrypted Contact Page

    Products and areas

  • FlowCrypt Account Settings

    Products and areas

  • FlowCrypt Attester

    Products and areas

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

Out of scope 14

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

  • https://github.com/FlowCrypt/enterprise-server

  • https://github.com/FlowCrypt/flowcrypt-deploy

  • https://github.com/FlowCrypt/flowcrypt-key-manager

  • https://github.com/FlowCrypt/flowcrypt-security

  • A DoS attack against public FlowCrypt services.

  • Account enumeration.

  • Blind SSRF specifically for WKD requests from client apps that only cause IP/user agent exfiltration.

  • DNSSEC-related issues.

  • Phishing and pure social engineering attacks are out of scope

  • Physical‑access attacks on a victim’s computer or device, man‑in‑the‑middle exploits, or compromised user accounts.

  • Public IP disclosure.

  • Reporting on email-related security issues, such as SPF, DNSSEC, DKIM, and DMARC.

  • Snapshot/Pasteboard/Clipboard data leakage.

  • StrandHogg 1.0 and 2.0 vulnerabilities are out of scope for the Android app.

Recent changes

Reward and scope changes across every FlowCrypt a.s. 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 flowcrypt.com: 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.

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