BIT-PARSE-2026-33163 Parse Server leaks protected fields via LiveQuery afterEvent trigger

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.50, when a Parse.Cloud.afterLiveQueryEvent trigger is registered for a class, the LiveQuery server leaks protected fields and authData to all subscribers of that class...

BIT-PARSE-2026-33042 Parse Server affected by empty authData bypassing credential requirement on signup

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.49, a user can sign up without providing credentials by sending an empty authData object, bypassing the username and password requirement. This allows the creation of...

BIT-PARSE-2026-32944 Parse Server crash via deeply nested query condition operators

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.45, an unauthenticated attacker can crash the Parse Server process by sending a single request with deeply nested query condition operators. This terminates the server an...

BIT-PARSE-2026-32886 Parse Server's Cloud function dispatch crashes server via prototype chain traversal

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.47, remote clients can crash the Parse Server process by calling a cloud function endpoint with a crafted function name that traverses the JavaScript prototype chain of a...

BIT-PARSE-2026-32878 Parse Server vulnerable to schema poisoning via prototype pollution in deep copy

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.44, an attacker can bypass the default request keyword denylist protection and the class-level permission for adding fields by sending a crafted request that exploits...

BIT-PARSE-2026-32770 Parse Server: LiveQuery subscription with invalid regular expression crashes server

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.43, a remote attacker can crash the Parse Server by subscribing to a LiveQuery with an invalid regular expression pattern. The server process terminates when the invalid...

BIT-PARSE-2026-32742 Parse Server session creation endpoint allows overwriting server-generated session fields

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.42, an authenticated user can overwrite server-generated session fields sessionToken, expiresAt, createdWith when creating a session object via POST /classes/Session. Thi...

BIT-PARSE-2026-32728 Parse Server has a stored XSS filter bypass via Content-Type MIME parameter and missing XML extension blocklist entries

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.41, an attacker who is allowed to upload files can bypass the file extension filter by appending a MIME parameter e.g. ;charset=utf-8 to the Content-Type header. This...

BIT-PARSE-2026-32594 Parse Server GraphQL WebSocket endpoint bypasses security middleware

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.40 and 9.6.0, the GraphQL WebSocket endpoint for subscriptions does not pass requests through the Express middleware chain that enforces authentication, introspection control, and...

PT-2026-26782

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 8.6.55 Parse Server versions prior to 9.6.0-alpha.44 Description An unauthenticated attacker can send a crafted HTTP request with a deeply nested query containing logical operators, causing the Parse Server proce...

Parse Server has an auth provider validation bypass on login via partial authData

Impact An authentication bypass vulnerability allows an attacker to log in as any user who has linked a third-party authentication provider, without knowing the user's credentials. The attacker only needs to know the user's provider ID to gain full access to their account, including a valid sessi...

Missing Authentication for Critical Function

Overview parse-server is a version of the Parse backend that can be deployed to any infrastructure that can run Node.js. Affected versions of this package are vulnerable to Missing Authentication for Critical Function due to the improper validation of third-party auth provider's credentials. An...

GHSA-PFJ7-WV7C-22PR Parse Server has an auth provider validation bypass on login via partial authData

Impact An authentication bypass vulnerability allows an attacker to log in as any user who has linked a third-party authentication provider, without knowing the user's credentials. The attacker only needs to know the user's provider ID to gain full access to their account, including a valid sessi...

GHSA-H29G-Q5C2-9H4F Parse Server email verification resend page leaks user existence

Impact The Pages route and legacy PublicAPI route for resending email verification links return distinguishable responses depending on whether the provided username exists and has an unverified email. This allows an unauthenticated attacker to enumerate valid usernames by observing different...

Information Exposure

Overview parse-server is a version of the Parse backend that can be deployed to any infrastructure that can run Node.js. Affected versions of this package are vulnerable to Information Exposure through the Pages and legacy PublicAPI routes that do not respect emailVerifySuccessOnInvalidEmail...

Parse Server email verification resend page leaks user existence

Impact The Pages route and legacy PublicAPI route for resending email verification links return distinguishable responses depending on whether the provided username exists and has an unverified email. This allows an unauthenticated attacker to enumerate valid usernames by observing different...

PT-2026-26493

Name of the Vulnerable Software and Affected Versions Parse Server versions prior to 8.6.52 Parse Server versions prior to 9.6.0-alpha.41 Description A flaw exists in Parse Server that allows an attacker to bypass authentication and log in as any user who has linked a third-party authentication...

CVE-2026-33163

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.35 and 8.6.50, when a Parse.Cloud.afterLiveQueryEvent trigger is registered for a class, the LiveQuery server leaks protected fields and authData to all subscribers of that...

CVE-2026-33042

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.29 and 8.6.49, a user can sign up without providing credentials by sending an empty authData object, bypassing the username and password requirement. This allows the creati...

CVE-2026-32742

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.17 and 8.6.42, an authenticated user can overwrite server-generated session fields sessionToken, expiresAt, createdWith when creating a session object via POST...