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836 bounties in database
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12/12/2018
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Grammarly

Security and privacy is a core concept for Grammarly. Grammarly looks forward to working with the security community to find security vulnerabilities in order to keep our businesses and customers safe.

Rules for us

  • We respect the time and effort of our researchers.
  • We will respond within 3 business days.
  • We will try to make a bounty determination after validating a legitimate security issue within 10 business days.
  • We will not take legal action against you for playing by these rules.
  • We will do our best to keep you informed about our progress throughout the process.
  • We will not respond to threats or negotiate under duress.

Rules for you

  • Be an ethical hacker.
  • Respect other users’ privacy: only interact with Grammarly accounts you own or with the explicit permission of the account holder.
  • Make a good-faith effort to avoid testing that would result in privacy violations, destruction of data or interruption or degradation of our service.
  • Let us know as soon as possible upon discovery of a potential security issue.
  • Contact us immediately if you do inadvertently encounter user data. Do not view, alter, save, store, transfer, or otherwise access the data and immediately purge any local information upon reporting the vulnerability to Grammarly.
  • Follow disclosure guidelines __.
  • We reserve the right to disqualify individuals from the program for disrespectful or disruptive behavior.

Scope

Focus Scope

Grammarly is particularly interested in testing our Native apps and clients, Desktop Editors, Mobile Keyboards, Add-On for Microsoft Word and Outlook.

Vulnerabilities in Grammarly Mobile Keyboard for Android with a working proof of concept may qualify for an additional bounty through the Google Play Security Rewards Program. To see which vulnerabilities may qualify for a bounty, please refer to the Google Play Security Rewards Program’s Vulnerability Criteria.

Native apps and clients

  • Browser Extensions for Chrome, Safari, Firefox, Edge - A browser extension that's compatible with the supported versions of Chrome, Safari, Firefox, and Edge. ​
  • Desktop Editors for Microsoft Windows and MacOS – our Electron-powered desktop application for macOS __and Windows __. ​
  • Add-On for Microsoft Word and Outlook - Grammarly add-on __for MS Word and Outlook for Windows. ​
  • Mobile keyboards and applications for Android and iOS – our mobile apps and keyboards.

Standard Scope

All other assets listed in our “In Scope” table.

Rewards

  • When duplicates (including internally known issues) occur, we only award the first report that we receive.
  • Multiple vulnerabilities caused by one underlying issue will be awarded one bounty.
  • Our rewards are based on the impact of a vulnerability, attack requirements and scenario.
  • We will try to conform with CVSSv3. However, certain exclusions might be possible.
  • The final reward decisions are up to the discretion of Grammarly.
  • We may calculate the severity and rewards of particular vulnerabilities in our client apps and web applications based on our User Agents and clients statistics.
  • If your report pointed our internal security team to a more severe bug, we will calculate your reward based on the most severe bug we found internally.
  • A report might be rewarded retroactively for a limited amount of time on a case-by-case basis.
  • We may award a Grammarly Premium account for particular "Informative" or "Low" severity bugs.
  • Clearness of your report reflects the potential reward: If your report isn't clear enough (e.g., lacks proof of concept code), it may lower the bounty, despite the severity of the found issue. This rule works vice versa too!

Recommendations for reporting

  • Submit one vulnerability per report, unless you need to chain vulnerabilities to provide impact.
  • Multiple chained vulnerabilities submitted as one report will qualify for one bigger bounty. If you submit multiple linked vulnerabilities as different reports, we will award every vulnerability individually!
  • Reports that include proof of concept code will be more likely to be accepted.

Public disclosure

  • Public disclosure of the vulnerability prior to resolution may cancel a pending reward.
  • We reserve the right to not disclose the report or to disclose it only partially. (We may do this if the original report includes password hashes, config files, proprietary source code, any internal info, etc.)
  • We encourage public disclosure of your findings in our program!
  • We'd like to help out with your write-ups about publicly disclosed bugs. Feel free to send your write-up to security@grammarly.com!

Non-Qualifying Vulnerabilities

  • Report about any vulnerability from the exclusion list below will most likely be closed as "N/A".
  • Submitting multiple N/A reports may result in you being excluded from participating in our program.

Common vulnerabilities excluded from the scope

  • Social engineering (e.g., phishing, vishing, smishing) of Grammarly employees and users is strictly prohibited.
  • Clickjacking, CSRF, Content spoofing issues without demonstrable security impact.
  • CSV injection.
  • Previously known vulnerable libraries without a working Proof of Concept.
  • Stack traces, path disclosure, and directory listings.
  • Self-XSS or having a user paste JavaScript into the browser console.
  • Vulnerabilities in outdated versions of Grammarly software.
  • Issues relating to non-Grammarly products.
  • Any activity that could lead to the disruption of our service (DoS).
  • Reports that include only crash dumps or other automated tool output without a proof of concept code.
  • Open ports scanning, banner grabbing, software version disclosure issues.
  • MITM attacks on secure connection and “Mixed Content” issues are out of scope.
  • Vulnerabilities that require root-level or physical access on a targeted device are out of scope.
  • Issues that affect only outdated user agents or unsupported platforms.
  • Issues related to the missing address bar in Desktop Editor.
  • Only remotely exploitable issues in Desktop Editor are eligible for reporting.

Non-Qualifying best practices

  • Missing cookie flags on non-authentication cookies.
  • Missing best practices in DNS configuration (e.g. DKIM/DMARC/SPF/TXT).
  • Missing best practices in SSL/TLS configuration.
  • Missing best practices in Content Security Policy (CSP) or lack of other security-related headers.
  • Leakage of sensitive tokens (e.g., reset password token) to trusted third parties on secure connection (HTTPS).

Non-Qualifying (business) issues

  • Institution access code enumeration or demonstrating access codes leaked in Internet forums.
  • Credential re-usage from public dumps.
  • UUID enumeration of any kind.
  • Ability to determine if a username or email has a Grammarly account, also known as an account oracle.
  • Signing up with multiple accounts to abuse referral code usage.
  • Password length, complexity, and re-use requirements.
  • Email verification feature.
  • Sharing Premium accounts with other users isn't considered a monetary impact.

Thank you for helping keep Grammarly and our users safe!

Consequences of Complying with This Policy aka Safe Harbor

We will not pursue a civil action or initiate a complaint to law enforcement for accidental, good faith violations of this policy. We consider activities conducted consistently with this policy to constitute “authorized” conduct under the Computer Fraud and Abuse Act. To the extent your activities are inconsistent with certain restrictions in our Acceptable Use Policy, we waive those restrictions for the limited purpose of permitting security research under this policy. We will not bring a DMCA claim against you for circumventing the technological measures we have used to protect the applications in scope.

If legal action is initiated by a third party against you and you have complied with Grammarly’s bug bounty policy, Grammarly will take steps to make it known that your actions were conducted in compliance with this policy.

Please submit a HackerOne report to us before engaging in conduct that may be inconsistent with or unaddressed by this policy.

In Scope

Scope Type Scope Name
android_application

com.grammarly.android.keyboard

ios_application

com.grammarly.keyboard

web_application

dox.grammarly.com

web_application

capi.grammarly.com

web_application

gnar.grammarly.com

web_application

data.grammarly.com

web_application

*.grammarly.net

web_application

app.grammarly.com

web_application

auth.grammarly.com

web_application

account.grammarly.com

web_application

institution.grammarly.com

web_application

subscription.grammarly.com

web_application

datareport.grammarly.com

web_application

www.grammarly.com

web_application

*.grammarly.io

web_application

admin-panel.grammarly.com

web_application

irbis.grammarly.com

web_application

food.grammarly.io

web_application

grammarly.ai

web_application

older version __

web_application
web_application
web_application
web_application
web_application

our website __

web_application

our website __

web_application

Google Play Security Rewards Program

web_application

Vulnerability Criteria

web_application

Out of Scope

Scope Type Scope Name
web_application

*.grammarlyaws.com

web_application

*.ppgr.io

web_application

*.stgr.io

web_application

*.qagr.io

web_application

*.cpgr.io

web_application

tech.grammarly.com

web_application

anagram.grammarly.io

web_application
  • send.grammarly.com
web_application
  • calendar.grammarly.com
web_application
  • support.grammarly.com
web_application
  • status.grammarly.com

Firebounty have crawled on 2018-12-12 the programe Grammarly on the platform Hackerone.

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