CVE-2026-32742: Improperly Controlled Modification of Dynamically-Determined Object Attributes

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...

CVE-2026-33042: Improper Authentication

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...

GHSA-V6C2-XWV6-8XF7 music-metadata has an infinite loop vulnerability in ASF parser

Summary music-metadata's ASF parser parseExtensionObject in lib/asf/AsfParser.ts:112-158 enters an infinite loop when a sub-object inside the ASF Header Extension Object has objectSize = 0. Root Cause When objectSize is 0: 1. remaining = 0 - 24 = -24 2. tokenizer.ignore-24 moves the read position...

music-metadata has an infinite loop vulnerability in ASF parser

Summary music-metadata's ASF parser parseExtensionObject in lib/asf/AsfParser.ts:112-158 enters an infinite loop when a sub-object inside the ASF Header Extension Object has objectSize = 0. Root Cause When objectSize is 0: 1. remaining = 0 - 24 = -24 2. tokenizer.ignore-24 moves the read position...

GHSA-WJQW-R9X4-J59V Parse Server affected by empty authData bypassing credential requirement on signup

Impact 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 authenticated sessions without proper credentials, even when anonymous users are disabled. Patches The fix ensures that empty o...

Weak Authentication

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 Weak Authentication in the user sign up. An attacker can create authenticated sessions without providing valid credentials b...

Improper Validation of Syntactic Correctness of Input

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 Improper Validation of Syntactic Correctness of Input in the LiveQuery subscription when an invalid regular expression patte...

Parse Server LiveQuery subscription with invalid regular expression crashes server

Impact 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 pattern reaches the regex engine during subscription matching, causing denial of service for all connected clients. Patches...

Improperly Controlled Modification of Dynamically-Determined Object Attributes

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 Improperly Controlled Modification of Dynamically-Determined Object Attributes via the POST /classes/Session endpoint. An...

Prototype Pollution

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 Prototype Pollution in the deep copy mechanism. An attacker can inject unauthorized fields into class schemas and bypass...

GHSA-9CCR-FPP6-78QF Parse Server vulnerable to schema poisoning via prototype pollution in deep copy

Impact 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 prototype pollution in the deep copy mechanism. This allows injecting fields into class schemas that have field addition locked...

Parse Server's Cloud function dispatch crashes server via prototype chain traversal

Impact 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 registered cloud function handler, causing a stack overflow. Patches The fix restricts property lookups during cloud functi...

Improperly Controlled Sequential Memory Allocation

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 Improperly Controlled Sequential Memory Allocation in the Cloud function endpoint. An attacker can cause the server process ...

GHSA-4263-JGMP-7PF4 Parse Server's Cloud function dispatch crashes server via prototype chain traversal

Impact 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 registered cloud function handler, causing a stack overflow. Patches The fix restricts property lookups during cloud functi...

GHSA-R3XQ-68WH-GWVH Parse Server has a password reset token single-use bypass via concurrent requests

Impact The password reset mechanism does not enforce single-use guarantees for reset tokens. When a user requests a password reset, the generated token can be consumed by multiple concurrent requests within a short time window. An attacker who has intercepted a password reset token can race the...

Time-of-check Time-of-use (TOCTOU) Race Condition

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 Time-of-check Time-of-use TOCTOU Race Condition in the password reset mechanism. An attacker can gain unauthorized access to...

Parse Server has a password reset token single-use bypass via concurrent requests

Impact The password reset mechanism does not enforce single-use guarantees for reset tokens. When a user requests a password reset, the generated token can be consumed by multiple concurrent requests within a short time window. An attacker who has intercepted a password reset token can race the...

Uncontrolled Recursion

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 Uncontrolled Recursion while processing of deeply nested query condition operators. An attacker can cause the server process...

GHSA-9XP9-J92R-P88V Parse Server crash via deeply nested query condition operators

Impact An unauthenticated attacker can crash the Parse Server process by sending a single request with deeply nested query condition operators. This terminates the server and denies service to all connected clients. Patches A depth limit for query condition operator nesting has been added via the...

Parse Server crash via deeply nested query condition operators

Impact An unauthenticated attacker can crash the Parse Server process by sending a single request with deeply nested query condition operators. This terminates the server and denies service to all connected clients. Patches A depth limit for query condition operator nesting has been added via the...