CWE-1321— Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

If an object prototype was corrupted by an attacker, they would have been able to set undesired attributes on a JavaScript object, leading to privileged code execution. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunder…

If an attacker was able to corrupt the methods of an Array object in JavaScript via prototype pollution, they could have achieved execution of attacker-controlled JavaScript code in a privileged context. This vulnerability affects Firefox …

An attacker could have sent a message to the parent process where the contents were used to double-index into a JavaScript object, leading to prototype pollution and ultimately attacker-controlled JavaScript executing in the privileged par…

OroPlatform is a PHP Business Application Platform. In affected versions by sending a specially crafted request, an attacker could inject properties into existing JavaScript language construct prototypes, such as objects. Later this inject…

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in purl 2.3.2 allows a malicious user to inject properties into Object.prototype.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-bbq 1.2.1 allows a malicious user to inject properties into Object.prototype.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in backbone-query-parameters 0.4.0 allows a malicious user to inject properties into Object.prototype.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-plugin-query-object 2.2.3 allows a malicious user to inject properties into Object.prototype.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in mootools-more 1.6.0 allows a malicious user to inject properties into Object.prototype.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-deparam 0.5.1 allows a malicious user to inject properties into Object.prototype.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-sparkle 1.5.2-beta allows a malicious user to inject properties into Object.prototype.

utilitify prior to 1.0.3 allows modification of object properties. The merge method could be tricked into adding or modifying properties of the Object.prototype.

SugarCRM before 8.0.4 and 9.x before 9.0.2 allows PHP object injection in the Import module by a Regular user.

An issue was discovered in CMS Made Simple 2.2.8. In the module ModuleManager (in the file action.installmodule.php), it is possible to reach an unserialize call with untrusted input and achieve authenticated object injection by using the …

PHPMailer before 5.2.27 and 6.x before 6.0.6 is vulnerable to an object injection attack.

assign-deep node module before 0.4.7 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability, which allows a malicious user to modify the prototype of "Object" via __proto__, causing the addition or modification of an ex…

The script '/adminui/error_details.php' in the Quest KACE System Management Appliance 8.0.318 allows authenticated users to conduct PHP object injection attacks.

hoek node module before 4.2.0 and 5.0.x before 5.0.3 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability via 'merge' and 'applyToDefaults' functions, which allows a malicious user to modify the prototype of "Object" …

A vulnerability was found in LinkedIn dustjs up to 2.x and classified as problematic. Affected by this issue is some unknown functionality. The manipulation leads to improperly controlled modification of object prototype attributes ('proto…

Uncaught exception, Improper validation of specified quantity in input, Improperly controlled modification of object prototype attributes ('prototype pollution') vulnerability in Apache Thrift nodejs bindings. This issue affects Apache …

Loop with unreachable exit condition ('infinite loop'), Improperly controlled modification of object prototype attributes ('prototype pollution') vulnerability in Apache Thrift NodeJS bindings with TJSONProtocol. This issue affects Apac…

Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.16.0, the Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution in the application's depende…

Prototype Pollution in Kibana can lead to code injection via unrestricted file upload combined with path traversal.

In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.17 and greater than or equal to 10.0.0 and less than 10.4.2, calling unserialize() on malicious user-submitted content can lead to modification of dynamically-determined object …

AdonisJS is a TypeScript-first web framework. From 10.1.3 until 10.1.5 and 11.0.3, AdonisJS @adonisjs/bodyparser incompletely fixed CVE-2026-25754 because nested multipart field payloads such as user.__proto__.polluted and constructor.prot…

18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. Versions prior to 3.9.3 allow an unauthenticated HTTP client to pollute Object.prototype in the Node.js process hostin…

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability that could result in arbitrary code exe…

The Preset configuration https://v2.vuetifyjs.com/en/features/presets  feature of Vuetify is vulnerable to Prototype Pollution https://cheatsheetseries.owasp.org/cheatsheets/Prototype_Pollution_Prevention_Cheat_Sheet.html  due to the i…

The csvtojson package, a tool for converting CSV data to JSON with customizable parsing capabilities, contains a prototype pollution vulnerability in versions prior to 2.0.10. This issue arises due to insufficient sanitization of nested he…

Conform, a type-safe form validation library, allows the parsing of nested objects in the form of `object.property`. Due to an improper implementation of this feature in versions prior to 1.1.1, an attacker can exploit the feature to trigg…

This affects all versions of package x-assign. The global proto object can be polluted using the __proto__ object.

This affects all versions of package @cookiex/deep. The global proto object can be polluted using the __proto__ object.

This affects all versions of package decal. The vulnerability is in the extend function.

This affects all versions of package decal. The vulnerability is in the set function.

Trigger.dev is a platform for building and deploying fully managed AI agents and workflows. From 3.3.8 until 4.5.6, the PUT /api/v1/runs/:runId/metadata endpoint passes attacker-controlled operation.key values to new JSONHeroPath(operation…

n8n is an open source workflow automation platform. Prior to 2.24.0, an authenticated user with permission to create or modify workflows could achieve global prototype pollution via the Microsoft SQL node by supplying a crafted value as th…

tRPC allows users to build and consume fully typesafe APIs without schemas or code generation. Starting in version 10.27.0 and prior to versions 10.45.3 and 11.8.0, a A prototype pollution vulnerability exists in `@trpc/server`'s `formData…

In RPyC 4.1.x through 4.1.1, a remote attacker can dynamically modify object attributes to construct a remote procedure call that executes code for an RPyC service with default configuration settings.

The package y18n before 3.2.2, 4.0.1 and 5.0.5, is vulnerable to Prototype Pollution.

Vaadin Charts renders charts with the Highcharts library and pins an exact version of it, 9.2.2 in Vaadin 22 to 24 and 12.2.0 in Vaadin 25, so an application cannot remove these vulnerabilities by upgrading Highcharts on its own. Highsoft …

mammoth (aka mammoth.js) before 1.12.2 is vulnerable to prototype pollution when reading the styles defined in a document. Converting a crafted .docx file allows an attacker to add arbitrary properties to Object.prototype. In 1.11.0 throug…

Vulnerability of exposing object heap addresses in the Ark eTS module. Impact: Successful exploitation of this vulnerability may affect availability.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability in Mozilla Convict. This allows an attacker to inject attributes that are used in other components, or to override existing attributes…

The package convict before 6.2.2 are vulnerable to Prototype Pollution via the convict function due to missing validation of parentKey. **Note:** This vulnerability derives from an incomplete fix of another [vulnerability](https://security…

n8n before 2.43.5 and 2.44.x before 2.44.1 accepts a client-supplied workflow ID and caches each workflow's owner project in memory by that ID, so a crafted ID such as __proto__ makes the Data Table project check match every project. An au…

Axios is a promise-based HTTP client for the browser and Node.js. From 0.28.0 until 0.34.0 and 1.15.1 until 1.20.0, ToFormData processes inherited serialization options and visitor properties supplied through prototype pollution. A separat…

TOON is a compact, human-readable serialization of JSON data for LLM prompts. Prior to 2.3.1, decoding attacker-controlled TOON with a __proto__, constructor, or prototype key wrote through the object prototype chain instead of creating an…

gettext-converter provides gettext resource conversion utilities for JavaScript. Prior to 1.3.3, js2i18next() in lib/js2i18next.js splits nested translation keys using options.keyseparator, whose default value consists of two number signs,…

sveltekit-superforms makes SvelteKit forms a pleasure to use. sveltekit-superforms v2.27.3 and prior are susceptible to a prototype pollution vulnerability within the parseFormData function of formData.js. An attacker can inject string and…

apphp js-object-resolver < 3.1.1 is vulnerable to Prototype Pollution via Module.setNestedProperty.