We take the security of our community very seriously and investigate all security reports in a timely manner. Researchers or users may occasionally encounter vulnerabilities on Meetup. Below is a guide to reporting vulnerabilities. 

Guidelines

• Let us know about issues you spot including:
  • OWASP Top Ten web, mobile, or API vulnerabilities
  • Authentication or authorization bypasses
  • Misconfigured servers or infrastructure errors
  • Endpoints that are vulnerable or expose internal resources, incorrect or excessive information
  • Privilege escalation or arbitrary code execution, however caused
  • Control flow, routing, or other logic errors 
• Don't impersonate users, or otherwise conceal your identity from us (for example, by using another person’s user ID, IP address, user agent, mobile device identifiers, or another device). Use your own account or test account(s) and never test with other community members’ accounts or identifying information without their consent.
• Don't use social engineering techniques (phishing, vishing, etc.)
• Don't do anything that might degrade the availability of services or data to other users in any way, such as brute force attacks, (distributed) denial-of-service attacks, or potentially resource-intensive scripts.
• Don't access or delete other users' or company data, or interact with your own account in a way that could affect others. If you encounter another user’s data, let Meetup know where and how, do not send the data to Meetup, and immediately delete any data you may have accessed.
• Don't test more than necessary once you think you've spotted something.
• Reports that are simply the output of common scanning tools, best practices, version numbers, or otherwise lacking explanation of relevance or likelihood/severity are unlikely to receive acknowledgement or consideration
• If you find a vulnerability in an open source library we're using, please also consider sharing your report with the maintainers.

How to submit

Please send your findings to security@meetup.com, along with any screenshots or steps that might help us reproduce or evaluate the issue.

What happens after I submit my report?

We will classify previously unreported issues and make a good faith effort to acknowledge your report. We cannot guarantee that we will provide details on our prioritization or resolution of the issues identified in a report.

Safe Harbor

If you fully comply with this policy and conduct your research and reporting activities in a good-faith manner, we will not initiate legal action or a law enforcement investigation against you. If legal action is initiated by a third party against you in connection with your research and reporting activities and you have fully complied with this policy, we will take steps to make it known that your actions were conducted in compliance with this policy.

Bug Bounty

We will publicly thank the first reporter for previously unreported, responsibly disclosed issues that we deem to be a risk to our community. We may consider a reward for significant reports on a case-by-case basis.

If you can’t post discussions, RSVP to events, or find groups that you’ve previously joined, you may be logged into the wrong Meetup account. Try logging out of Meetup and logging back in again using a different email address. Learn what to do if you’re having trouble logging in.

We recommend deactivating any additional accounts that you’re not currently using.

If you don’t see the option to edit your group or event, you may be logged into the wrong Meetup account. Try logging out of Meetup and logging back in again using a different email address. Learn what to do if you’re having trouble logging in.

We recommend deactivating any additional accounts that you’re not currently using.

Meetup supports the following desktop browsers

• Google Chrome: Download the latest version.
• Mozilla Firefox: Download the latest version. 
• Apple Safari: Download the latest version.
• Microsoft Edge: Updated through Windows 10 devices.

If you're using an old version of any of the browsers listed above, you should update to the latest version or try a different browser.

Note: Internet Explorer is no longer a supported browser. As of 2016, Microsoft has decided to permanently stop supporting Internet Explorer.

Meetup supports the following mobile browsers

• WebKit-based browsers: Default browser on iOS (iPhone, iPad, iPod) and Android phones
• FireFox Mobile for Android and iOS (iPhone, iPad, iPod)
• Opera Mobile for Android and iOS (iPhone, iPad, iPod)

Beta versions of browsers

If you're using a beta version of one of the browsers above, you may run into errors or bugs. We make sure our site is compatible with official browser releases.

Viewing the full website on a mobile device

If you're viewing the Meetup's full website on a mobile device, you may experience errors related to certain features. For the best performance on mobile devices, use Meetup on mobile browsers or the iOS and Android app. 

If you’re unable to stay logged in on your desktop web browser, we have a few ideas of what may be at the root of the problem.

• Have you checked your browser's security settings? You may want to find out more about disabling cookies or clearing your cache.
• It could be related to your antivirus software. Check out your antivirus software settings to be sure "Meetup.com" is on the allowed list.

If you’re still having trouble staying logged in after looking into possibilities above, please contact us below and send us an email. It would be really helpful if you would include:

• Type of computer you’re using (PC/Mac)
• Operating system and version
• Browser (e.g., Explorer, Firefox, Chrome, Safari, etc.) and version
• Name of any antivirus and/or spyware software on your computer

There are a couple of reasons why you might receive an error when attempting to upload a photo to Meetup.

Whether it’s for your profile, a group, or an event, photos must be smaller than 10MB and be in JPG or PNG format. If you're still receiving an error, try uploading a photo without any visible text.

If you’re trying to upload a photo to a group's photo album, keep in mind that every album has a limit of 500 photos. But, there’s no limit to the number of albums a group can have. If the current one has hit its limit, just start a new one.

If you’re an organizer of a group outside the United States, and your event attendees are not being marked as paid, there are a few possible explanations:

Your members aren’t returning to Meetup after submitting a payment 

After a member submits their payment via PayPal, they must click a link to return to your group page to complete their RSVP and be marked as Paid. If they do not, the payment will be processed but they will not be marked as Going to your event. 

You can manually change a member's RSVP to Yes and mark them as Paid.

You have a PayPal Business account 

PayPal Business accounts do not sync with Meetup. You'll need to either create a new personal PayPal account, or manually track payments you receive on your Money page.

Your Instant Payment Notification (IPN) is enabled

If you’re using a personal PayPal account, make sure that your IPN is turned off.

A picture is worth a thousand words, so when it comes to reporting an issue you’re having with Meetup, we prefer to save you from all that typing. It also helps us see exactly what you’re seeing.

If our Community Support Team requests a screenshot to detail an issue you’re experiencing:

• Windows: Use your system’s Snipping Tool to capture a screenshot.
• Mac OS: Follow these steps to take a screenshot of either your entire screen or a portion of your screen.
• iOS: Refer to these instructions to capture a screenshot of the app or your mobile web browser.
• Android: Follow these instructions to capture a screenshot of the app or your mobile web browser.

After capturing your screenshot, attach it to your email to our Community Support Team.

If you need customer service, you can contact Meetup support anytime by submitting a request through our Help Center form. Before you submit a request, we will suggest articles that may answer your question.

You’ll also find a request button called Have questions? Get help at the bottom every Help Center article.

Contact Meetup Support

Desktop and mobile web

1. Sign in to the Help Center by selecting Sign in in the top right-hand corner.
2. Click Have questions? Get help on the bottom of any article.

iOS and Android app

1. From the Home tab, tap on your circular Profile button in the top right-hand corner.
2. Tap the Gear or Three dots button and then Help.
3. Tap Contact us and then New or the Pencil button.