• $120 – $5,000 per vulnerability
  • Up to $10,000 maximum reward
  • Partial safe harbor
  • Managed by Bugcrowd

Program stats

400 vulnerabilities rewarded

Validation within 10 days
75% of submissions are accepted or rejected within 10 days

$586.20 average payout (last 3 months)

Latest hall of famers

Recently joined this program


Please note: This program does not allow disclosure. You may not release information about vulnerabilities found in this program to the public.


For this program, we're inviting researchers to test our freelancer platform and mobile iOS/Android/Desktop apps. Our goal with this program is to ensure that our customers are using a secure platform that's free of security vulnerabilities.

Please note: Upwork regularly releases new code, updates will be posted in the announcement section highlighting new code. This is a great opportunity for Upwork and the researcher community to work together to find vulnerabilities! Watch for new releases on Upwork's Blog.

Special Bonuses and rewards

  • Upwork is also offering an extra, one-time $5,000 reward for the ability to break into any of the specified client or freelancer accounts and steal the funds allocated to it. The account is: bugcrowd-client@upwork.com and bugcrowd-freelancer@upwork.com.

    • Please provide complete reproduction steps for how you were able to capture the flag
    • Bruteforcing credentials to break in is still out of scope as per the regular scoping rules.
    • Use of Social Engineering to take-over the account is still out of scope as per the regular scoping rules.
  • Momentum Bonus, the more you submit, the more you earn!

    • There is a 7-day sliding window where you can build momentum on your rewards for the Upwork program. Every accepted bug submitted during this window will earn you a 10% increase on your payout. For example, if you submit 3 bugs in one week the first pays 100%, the second pays 110%, the third pays 120%, etc. this scales to a maximum payout amount of 200% (double reward) the original value.


In scope

Target name Type
*.upwork.com Other
Upwork - iOS and Android Applications Other
Upwork Dash Messanger Desktop Version (www.upwork.com/downloads) Other
https://www.upwork.com/api API

Out of scope

Target name Type
support.upwork.com (Any vuln related to a support ticket) Website
community.stage.upwork.com Website
community.upwork.com Website
stage.upwork.com Website
Any Third-party Services Website
Any subdomain/domain/property not listed in the 'in scope' section, is out of scope. Other
https://e.upwork.com/ Website

Any domain/property of Upwork not listed in the targets section is out of scope. This includes any/all subdomains not listed above.


For the initial prioritization/rating of findings (with a few exceptions), this program will use the Bugcrowd Vulnerability Rating Taxonomy.

However, it is important to note that in some cases, a vulnerability priority will be modified due to its likelihood or impact. In any instance where an issue is downgraded, a full, detailed explanation will be provided to the researcher - along with the opportunity to appeal and make a case for a higher priority.

Please see Target Information for exclusions specific to this program.


Priority iOS, Android Web, Desktop, API
P1 $5,000 $2,000
P2 $2,000 $1,200
P3 $720 $480
P4 $300 $120


The following requirements are needed to test - not abiding by these rules may result in you not being ineligible from receiving the full reward amount or may lead to being suspended from testing and/or removal from the program.

  • User Agent - To participate in the Upwork Bug Bounty please configure your scanner to include bugcrowd in the user-agent string. Failure to do so may result in your IP being temporarily blocked from participation in the program.

  • Access / Upwork Account - You can self register for an Upwork account and Upwork API using your @bugcrowdninja.com email address. Testing using any other account is out of scope. Failure to use your @bugcrowdninja.com address may result in your Account being temporarily locked or being suspended from participating in the program.

Target information

  • Please note that the mobile web app is available at: <upwork.com/mobile>
  • Information on the public messaging API is available at: <developer.upwork.com> and also attached to the listing.
  • To view a list of what will likely be the best areas to focus on to find valid and unique findings, please go here
  • Android application
  • iOS application
  • Upwork Developers
  • Worth noting, Upwork is designed to help people find jobs and posting/viewing resumes and other PII is a core component of the service. While you may submit findings it must have a clear threat or business impact for Upwork, otherwise it is likely to be marked as won't fix or informational.


Please sign up for an Upwork account and Upwork API using your @bugcrowdninja.com email address. Only basic/free access is provided by the upwork team for this program, you are welcome to test the API using a paid account but these are not provided at this time.

When testing please only test against jobs that you have created - do not test against jobs owned by persons other than yourself


  • All CSRF vulnerabilities will likely be evaluated at P4 level
  • Social Engineering
  • Uploading of any vulnerability or client-related content to third-party utilities (e.g. Github, DropBox)
  • Network-layer D/DoS (If you suspect an application-layer D/DoS, contact Bugcrowd to review the vulnerability. Do not proof-of-concept application-layer D/DoS attacks without prior consent)
  • All attack payload data must use professional language (ex: “test” rather than “this has been hacked.”)
  • If able to gain access to a system, accounts, users, or user data, stop at the recognition of and report. Do not dive deeper to determine how much more is accessible.
  • Vulnerabilities affecting users of outdated browsers, plugin, platforms, or operating systems.
  • Github repos not associated with cloud.upwork.com.

Additionally, the following vulnerabilities are considered too low of an impact, and will be marked as Out of Scope if submitted


  • Account/e-mail enumeration using brute-force attacks
  • Any low impact issues related to session management (i.e. concurrent sessions, session expiration, password reset/change logout, etc.)
  • Bypassing content restrictions in uploading a file without proving the file was received
  • Clickjacking/UI redressing
  • Incomplete or missing SPF/DMARC/DKIM records
  • Issues related to password/credential strength, length, lock outs, or lack of brute-force/rate limiting protections
  • Lack of SSL or Mixed content
  • Missing Cookie flags
  • Reflected file download attacks (RFD)
  • Self-exploitation (i.e. password reset links or cookie reuse)
  • URL Redirection
  • Use of a known-vulnerable library which leads to a low-impact vulnerability (i.e. jQuery outdated version leads to low impact XSS)
  • Vulnerabilities affecting users of outdated browsers, plugins or platforms
  • Vulnerabilities that allow for the injection of arbitrary text without allowing for hyperlinks, HTML, or JavaScript code to be injected
  • Vulnerabilities that require the user/victim to perform extremely unlikely actions (i.e. Self-XSS)


  • android:debuggable=”true” in Android Manifest
  • android:allowBackup set to true (by default)
  • Information disclosure via Toast messages


  • Information leakage in backgrounding snapshots
  • Information leakage in keystroke caching


  • Copy & Paste disabled for sensitive fields
  • Pasteboard data cached
  • The application asks for more permission than its needs
  • Two-factor authentication bypass that requires physical access to a logged-in device
  • Any issue in the mobile app that can only be exploited on a rooted or jailbroken device
  • Any issue exploited in the mobile app because an operating system vulnerability
  • Local access to user data when operating a rooted mobile device

This list will be updated if we see a particular vuln that is systemic and site wide. Please check this list often. This is for your benefit and to save you the trouble of searching the analytics

Privacy Considerations are OOS

Upwork is Privacy Shield certified. Upwork has received TRUSTe’s Privacy Seal signifying that our privacy policy and practices are in compliance with the TRUSTe program requirements including transparency, accountability, and choice regarding the collection and use of personal information. Upwork is GDPR compliant.

Program rules

This program follows Bugcrowd’s standard disclosure terms.

This program does not offer financial or point-based rewards for P5 — Informational findings. Learn more about Bugcrowd’s VRT.