Walt.io

Walt (formerly Wallet on Telegram) welcomes collaboration with the security research community to identify vulnerabilities and help protect our products, users, and their assets.

Vulnerability Classification & Severity Levels

We assess and categorize reported vulnerabilities based on their potential impact. This helps ensure that rewards are proportionate to the severity and real-world risk of each finding.

🟣 Extreme

Reward: $30,000 to $100,000

• Access to financial services with the ability to withdraw funds from blockchain wallets that have a significant impact on the business
• A large-scale compromise of user wallets

🔴 Critical

Reward: $3,000 to $29,999

• Remote Code Execution (RCE) with direct access to core infrastructure, servers, or sensitive user data
• Full system or infrastructure compromise
• Unrestricted access to highly sensitive user data (e.g., financial data)

🟠 High

Reward: $500 to $3,000

• Privilege escalation across users, roles, or system boundaries
• Unauthorized access to sensitive or restricted data
• RCEs with limited impact due to containment, lack of access to valuable data, or other mitigating factors
• Bypassing major access controls or business logic

🟡 Medium

Reward: $200 to $500

• Cross-Site Scripting (XSS)
• SQL injection with limited scope or controlled impact
• Vulnerabilities with moderate business or user impact
• Vulnerabilities requiring significant user interaction or affecting non-critical components

🔵 Low

Reward: $100 to $200

• Exposure of non-sensitive information (e.g., user-agent logs, internal metadata)
• Low-impact misconfigurations (e.g., non-exploitable headers)

⚠️ Note: Not all RCEs are considered critical.
RCEs that are limited to low-privileged environments (e.g., sandboxed browser contexts or restricted environments without meaningful access or impact) may be rated High or Medium, depending on exploitability and potential harm.

Additional Evaluation Criteria

Risk Rating System: Final severity and bounty amounts are determined using our internal risk assessment model, which considers exploitability, potential business impact, and monetary risk

PII Exposure: Reports involving personally identifiable information (PII) are evaluated using an internal framework. Severity is based on the nature of the data, context of exposure, and risk to affected users.

Response Targets

Walt will make a best effort to meet the following SLAs for hackers participating in our program:

Disclosure Policy

• As this is a private program, please do not discuss this program or any vulnerabilities (even resolved ones) outside of the program without express consent from the organization.
• Follow HackerOne's disclosure guidelines.

Scope Leniency

• This program will not accept submissions for assets that are not listed as in scope

Program Rules

Please provide detailed reports with reproducible steps. If the report is not detailed enough to reproduce the issue, the issue will not be eligible for a reward.

• Submit one vulnerability per report, unless you need to chain vulnerabilities to provide impact.
• When duplicates occur, we only award the first report that was received (provided that it can be fully reproduced).
• Multiple vulnerabilities caused by one underlying issue will be awarded one bounty.
• Social engineering (e.g. phishing, vishing, smishing) is prohibited.
• Make a good faith effort to avoid privacy violations, destruction of data, and interruption or degradation of our service.
• Ask the program team before submitting vulnerabilities on unscoped subdomains
• Only interact with accounts you own or with the explicit permission of the account holder.

Test Plan

Researchers can test Walt products included in the program's defined scope. Please follow the instructions below for each supported platform.

Telegram Mini App Testing

Application Details

• Application: Walt (formerly Wallet on Telegram)
• Platform: Telegram Mini App
• Access: https://t.me/walt

Testing Guidelines

• Researchers can sign up for a free account through the Telegram Mini App.
• After signing up with your Telegram account, set up a recovery email in TON Space using your HackerOne email alias ([email protected]).
• Use only accounts you own or have explicit permission to test.
• Follow the existing program rules and scope exclusions.

Android Application Testing

Application Details

• Application: Walt: Crypto Wallet
• Platform: Android
• Package name: io.walt.app
• Google Play: https://play.google.com/store/apps/details?id=io.walt.app

Testing Guidelines

• Install the latest publicly available version of the application from Google Play.
• Use only accounts you own or have explicit permission to test.
• Do not access, modify, or transfer funds belonging to other users.
• Do not perform denial-of-service testing or activities that may disrupt production services.
• Include the affected application version, Android version, reproduction steps, and demonstrated security impact in vulnerability reports.
• Follow the existing program rules and scope exclusions.

HTTP Request Headers

Where technically feasible, researchers should include the following header in their testing requests to help identify authorized security research:

X-HackerOne-Research: [H1 username]

Out of Scope Vulnerabilities

When reporting vulnerabilities, please consider both the exploitability of the issue and its demonstrated security impact. The following findings are considered out of scope:

• UI/UX bugs with no security impact or minor security impact
• Clickjacking on pages with no sensitive actions
• Cross-Site Request Forgery (CSRF) on unauthenticated forms or forms with no sensitive actions
• Attacks requiring MITM or physical access to a user's device.
• Previously known vulnerable libraries without a working Proof of Concept.
• Comma Separated Values (CSV) injection without demonstrating a vulnerability.
• Missing best practices in SSL/TLS configuration.
• Any activity that could lead to the disruption of our service (DoS).
• Content spoofing and text injection issues without showing an attack vector/without being able to modify HTML/CSS
• Rate limiting or bruteforce issues on non-authentication endpoints
• Missing best practices in Content Security Policy.
• Missing HttpOnly or Secure flags on cookies
• Missing email best practices (Invalid, incomplete or missing SPF/DKIM/DMARC records, etc.)
• Vulnerabilities only affecting users of outdated or unpatched browsers [Less than 2 stable versions behind the latest released stable version]
• Software version disclosure / Banner identification issues / Descriptive error messages or headers (e.g. stack traces, application or server errors).
• Public Zero-day vulnerabilities that have had an official patch for less than 1 month will be awarded on a case by case basis.
• Tabnabbing
• Open redirect - unless an additional security impact can be demonstrated
• Issues that require unlikely user interaction
• Missing, misconfigured, or overly permissive DNS CAA records (RFC 8659), without a demonstrated certificate issuance bypass or other direct security impact.
• Public Sentry DSN exposure, unauthenticated submission of Sentry events, envelopes, or traces, or Sentry monitoring/log poisoning, without demonstrated impact to customer data, account security, or another in-scope asset.
• Public access to events-gateway or unauthenticated submission of analytics, telemetry, metrics, or business events, including fake event injection, metrics poisoning, monitoring noise without demonstrated impact to customer data, account security, asset custody, or another in-scope asset.
• JavaScript source map exposure or disclosure of publicly delivered client-side code, without demonstrated exposure of valid credentials, sensitive non-public data, unauthorized access, or another concrete security impact.

We prohibit any AI agents from searching for vulnerabilities as part of the Bug Bounty program.

Thank you for helping keep Walt and our users safe!