VYPR

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

VariantIncomplete

Description

The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

Hierarchy (View 1000)

Parents

Children

none

Related attack patterns (CAPEC)

CAPEC-1 · CAPEC-180 · CAPEC-77

CVEs mapped to this weakness (642)

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  • CVE-2026-16266MedJul 21, 2026
    risk 0.00cvss 4.0epss 0.00

    Versions of the package mongo-object before 3.0.3 are vulnerable to Prototype Pollution via the expandKey() function in util.js. An attacker can modify the JavaScript prototype chain by supplying a crafted property path containing special keys such as __proto__.

  • CVE-2026-53592MedJul 20, 2026
    risk 0.00cvss 4.6epss 0.00

    FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. A Prototype Pollution condition in the `getQueryParam` function `/public/js/main.js` and was addressed in version 1.8.139 by blocking URL query keys matching the pattern `__proto__`. However, this…

  • CVE-2026-16151MedJul 18, 2026
    risk 0.00cvss 6.3epss 0.00

    A vulnerability has been found in CartoDB carto-api-client 0.5.29. This impacts the function addFilter of the file src/filters.ts. Such manipulation of the argument column leads to improperly controlled modification of object prototype attributes. The attack can be executed…

  • CVE-2026-16150MedJul 18, 2026
    risk 0.00cvss 6.3epss 0.00

    A vulnerability was found in RobinHerbots Inputmask up to 5.0.9. Affected by this issue is the function extendDefaults/extendDefinitions/extendAliases in the library lib/dependencyLibs/extend.js of the component Internal Deep Merge Helper. The manipulation results in improperly…

  • CVE-2026-48819MedJul 17, 2026
    risk 0.00cvss 4.8epss 0.00

    Hey API is an ecosystem for turning API specifications into production-ready code. Prior to 0.97.3, dist/clients/core/params.ts ships a runtime template copied into generated SDKs as params.gen.ts, and buildClientParams writes unknown slot-prefixed keys such as $body_,…

  • CVE-2026-16008MedJul 17, 2026
    risk 0.00cvss 6.3epss 0.00

    A security vulnerability has been detected in sagold json-schema-library 11.5.0/11.5.1. This impacts the function parsePropertyDependencies of the file src/keywords/propertyDependencies.ts. The manipulation leads to improperly controlled modification of object prototype…

  • CVE-2026-15702MedJul 14, 2026
    risk 0.00cvss 6.3epss 0.00

    A security vulnerability has been detected in tamagui up to 2.3.0. This affects the function updateConfig of the file code/core/web/src/config.ts. Such manipulation leads to improperly controlled modification of object prototype attributes. The attack may be performed from…

  • CVE-2026-15699MedJul 14, 2026
    risk 0.00cvss 6.3epss 0.00

    A vulnerability was identified in spencermountain compromise up to 14.15.1. Affected is the function nlp.extend of the file src/API/extend.js of the component Public Root API. The manipulation of the argument plugin leads to improperly controlled modification of object prototype…

  • CVE-2026-15698MedJul 14, 2026
    risk 0.00cvss 6.3epss 0.00

    A vulnerability was determined in kofrasa mingo up to 7.2.1. This impacts the function update/updateOne/updateMany of the component Update API. Executing a manipulation of the argument Set can lead to improperly controlled modification of object prototype attributes. The attack…

  • CVE-2026-15607MedJul 13, 2026
    risk 0.00cvss 4.3epss 0.00

    A vulnerability was detected in tanstack db up to 0.6.8. Affected by this vulnerability is the function select of the file src/query/compiler/select.ts of the component Alias Path Handler. The manipulation results in improperly controlled modification of object prototype…

  • CVE-2026-15598MedJul 13, 2026
    risk 0.00cvss 6.3epss 0.00

    A weakness has been identified in antv layout 2.0.0. This impacts the function setNestedValue in the library lib/util/object.js. Executing a manipulation of the argument path can lead to improperly controlled modification of object prototype attributes. The attack can be…

  • CVE-2026-56763MedJul 11, 2026
    risk 0.00cvss 4.8epss 0.00

    Hono before 4.12.7 allows __proto__ key in parseBody with dot option enabled, permitting specially crafted form field names to create objects with __proto__ properties. When parsed results are merged into regular JavaScript objects using unsafe merge patterns, attackers can…

  • CVE-2026-15195MedJul 9, 2026
    risk 0.00cvss 6.3epss 0.00

    A weakness has been identified in apidevtools json-schema-ref-parser up to 15.3.5. This impacts the function Refs.set/Pointer.set in the library lib/pointer.ts. Executing a manipulation can lead to improperly controlled modification of object prototype attributes. The attack can…

  • CVE-2026-59206HigJul 9, 2026
    risk 0.00cvss 7.1epss 0.01

    n8n is an open source workflow automation platform. Prior to 1.123.61, 2.27.4, and, 2.28.1, an authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API, allowing…

  • CVE-2026-57926LowJun 26, 2026
    risk 0.00cvss 2.6epss 0.00

    In JetBrains YouTrack before 2026.2.16593 the websandbox bridge was vulnerable to a prototype pollution attack

  • CVE-2026-21854CriJan 7, 2026
    risk 0.00cvss 9.8epss 0.00

    The Tarkov Data Manager is a tool to manage the Tarkov item data. Prior to 02 January 2025, an authentication bypass vulnerability in the login endpoint allows any unauthenticated user to gain full admin access to the Tarkov Data Manager admin panel by exploiting a JavaScript…

  • CVE-2024-34698MedMay 14, 2024
    risk 0.00cvss 4.6epss 0.00

    FreeScout is a free, self-hosted help desk and shared mailbox. Versions of FreeScout prior to 1.8.139 contain a Prototype Pollution vulnerability in the `/public/js/main.js` source file. The Prototype Pollution arises because the `getQueryParam` Function recursively merges an…

  • CVE-2023-32305HigMay 12, 2023
    risk 0.00cvss 8.8epss 0.01

    aiven-extras is a PostgreSQL extension. Versions prior to 1.1.9 contain a privilege escalation vulnerability, allowing elevation to superuser inside PostgreSQL databases that use the aiven-extras package. The vulnerability leverages missing schema qualifiers on privileged…

  • CVE-2022-31106HigJun 28, 2022
    risk 0.00cvss 8.3epss 0.01

    Underscore.deep is a collection of Underscore mixins that operate on nested objects. Versions of `underscore.deep` prior to version 0.5.3 are vulnerable to a prototype pollution vulnerability. An attacker can craft a malicious payload and pass it to `deepFromFlat`, which would…

  • CVE-2022-25645MedMay 1, 2022
    risk 0.00cvss 6.5epss 0.02

    All versions of package dset are vulnerable to Prototype Pollution via 'dset/merge' mode, as the dset function checks for prototype pollution by validating if the top-level path contains __proto__, constructor or protorype. By crafting a malicious object, it is possible to…