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CWE-1321

536 CVEs • Abstraction: Variant

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

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.

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CVEs (536)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
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Jun 17, 2026
Sep 24, 2025
N/A· v4
6.5 MEDIUM· v3
N/A· v2
A vulnerability exists in the 'counterpart' library for Node.js and the browser due to insufficient sanitization of user-controlled input in translation key processing. The affected versions prior to 0.18.6 allow attacke...Show more
A vulnerability exists in the 'counterpart' library for Node.js and the browser due to insufficient sanitization of user-controlled input in translation key processing. The affected versions prior to 0.18.6 allow attackers to manipulate the library's translation functionality by supplying maliciously crafted keys containing prototype chain elements (e.g., __proto__ ), leading to prototype pollution. This weakness enables adversaries to inject arbitrary properties into the JavaScript Object prototype through the first parameter of the translate method when combined with specific separator configurations, potentially resulting in denial-of-service conditions or remote code execution in vulnerable applications. The issue arises from the library's failure to properly validate or neutralize special characters in translation key inputs before processing.Show less
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Jun 17, 2026
Sep 24, 2025
N/A· v4
5.3 MEDIUM· v3
N/A· v2
The Runtime components of messageformat package for Node.js before 3.0.2 contain a prototype pollution vulnerability. Due to insufficient validation of nested message keys during the processing of message data, an attack...Show more
The Runtime components of messageformat package for Node.js before 3.0.2 contain a prototype pollution vulnerability. Due to insufficient validation of nested message keys during the processing of message data, an attacker can manipulate the prototype chain of JavaScript objects by providing specially crafted input. This can result in the injection of arbitrary properties into the Object.prototype, potentially leading to denial of service conditions or unexpected application behavior. The vulnerability allows attackers to alter the prototype of base objects, impacting all subsequent object instances throughout the application's lifecycle.Show less
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Jun 17, 2026
Sep 24, 2025
N/A· v4
5.3 MEDIUM· v3
N/A· v2
A vulnerability exists in the 'min-document' package prior to version 2.19.0, stemming from improper handling of namespace operations in the removeAttributeNS method. By processing malicious input involving the __proto__...Show more
A vulnerability exists in the 'min-document' package prior to version 2.19.0, stemming from improper handling of namespace operations in the removeAttributeNS method. By processing malicious input involving the __proto__ property, an attacker can manipulate the prototype chain of JavaScript objects, leading to denial of service or arbitrary code execution. This issue arises from insufficient validation of attribute namespace removal operations, allowing unintended modification of critical object prototypes. The vulnerability remains unaddressed in the latest available version.Show less
1Keyangxiang
1Csvtojson
Jun 17, 2026
Sep 24, 2025
N/A· v4
8.6 HIGH· v3
N/A· v2
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 saniti...Show more
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 header names during the parsing process in the parser_jsonarray component. When processing CSV input containing specially crafted header fields that reference prototype chains (e.g., using __proto__ syntax), the application may unintentionally modify properties of the base Object prototype. This vulnerability can lead to denial of service conditions or unexpected behavior in applications relying on unmodified prototype chains, particularly when untrusted CSV data is processed. The flaw does not require user interaction beyond providing a maliciously constructed CSV file.Show less
1Huawei
1Harmonyos
Jun 17, 2026
Sep 5, 2025
N/A· v4
5.5 MEDIUM· v3
N/A· v2
Vulnerability of exposing object heap addresses in the Ark eTS module. Impact: Successful exploitation of this vulnerability may affect availability.
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Jun 17, 2026
Aug 26, 2025
7.9 HIGH· v4
N/A· v3
N/A· v2
Svelte devalue is a utility library. Prior to version 5.3.2, a string passed to devalue.parse could represent an object with a __proto__ property and devalue.parse does not check that an index is numeric. This could resu...Show more
Svelte devalue is a utility library. Prior to version 5.3.2, a string passed to devalue.parse could represent an object with a __proto__ property and devalue.parse does not check that an index is numeric. This could result in assigning prototypes to objects and properties, leading to prototype pollution. This issue has been fixed in version 5.3.2Show less
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Jun 17, 2026
Aug 14, 2025
N/A· v4
7.3 HIGH· v3
N/A· v2
@std/toml is the Deno Standard Library. Prior to version 1.0.9, an attacker can pollute the prototype chain in Node.js runtime and Browser when parsing untrusted TOML data, thus achieving Prototype Pollution (PP) vulnera...Show more
@std/toml is the Deno Standard Library. Prior to version 1.0.9, an attacker can pollute the prototype chain in Node.js runtime and Browser when parsing untrusted TOML data, thus achieving Prototype Pollution (PP) vulnerability. This is because the library is merging an untrusted object with an empty object, which by default the empty object has the prototype chain. This issue has been patched in version 1.0.9.Show less
1Spreecommerce
1Spree
Sep 24, 2025
Aug 13, 2025
10.0 CRITICAL· v4
9.8 CRITICAL· v3
N/A· v2
Spreecommerce versions prior to 0.60.2 contains a remote command execution vulnerability in its search functionality. The application fails to properly sanitize input passed via the search[send][] parameter, which is dyn...Show more
Spreecommerce versions prior to 0.60.2 contains a remote command execution vulnerability in its search functionality. The application fails to properly sanitize input passed via the search[send][] parameter, which is dynamically invoked using Ruby’s send method. This allows attackers to execute arbitrary shell commands on the server without authentication.Show less
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Jun 17, 2026
Aug 12, 2025
8.8 HIGH· v4
N/A· v3
N/A· v2
content-security-policy-parser parses content security policy directives. A prototype pollution vulnerability exists in versions 0.5.0 and earlier, wherein if a policy name is called __proto__, one can override the Objec...Show more
content-security-policy-parser parses content security policy directives. A prototype pollution vulnerability exists in versions 0.5.0 and earlier, wherein if a policy name is called __proto__, one can override the Object prototype. This issue has been patched in version 0.6.0. A workaround involves disabling prototype method in NodeJS, neutralizing all possible prototype pollution attacks. Provide either --disable-proto=delete (recommended) or --disable-proto=throw as an argument to node to enable this feature.Show less
1Sunnyadn
1Js Toml
Jun 17, 2026
Aug 5, 2025
7.9 HIGH· v4
7.5 HIGH· v3
N/A· v2
js-toml is a TOML parser for JavaScript, fully compliant with the TOML 1.0.0 Spec. In versions below 1.0.2, a prototype pollution vulnerability in js-toml allows a remote attacker to add or modify properties of the globa...Show more
js-toml is a TOML parser for JavaScript, fully compliant with the TOML 1.0.0 Spec. In versions below 1.0.2, a prototype pollution vulnerability in js-toml allows a remote attacker to add or modify properties of the global Object.prototype by parsing a maliciously crafted TOML input. This is fixed in version 1.0.2.Show less
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Jun 17, 2026
Jul 31, 2025
7.0 HIGH· v4
N/A· v3
N/A· v2
A prototype pollution vulnerability exists in @nyariv/sandboxjs versions <= 0.8.23, allowing attackers to inject arbitrary properties into Object.prototype via crafted JavaScript code. This can result in a denial-of-serv...Show more
A prototype pollution vulnerability exists in @nyariv/sandboxjs versions <= 0.8.23, allowing attackers to inject arbitrary properties into Object.prototype via crafted JavaScript code. This can result in a denial-of-service (DoS) condition or, under certain conditions, escape the sandboxed environment intended to restrict code execution. The vulnerability stems from insufficient prototype access checks in the sandbox’s executor logic, particularly in the handling of JavaScript function objects returned.Show less
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Jun 17, 2026
Jul 25, 2025
8.8 HIGH· v4
N/A· v3
N/A· v2
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability in Linkify (linkifyjs) allows XSS Targeting HTML Attributes and Manipulating User-Controlled Variables.This issue af...Show more
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability in Linkify (linkifyjs) allows XSS Targeting HTML Attributes and Manipulating User-Controlled Variables.This issue affects Linkify: from 4.3.1 before 4.3.2.Show less
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Jun 17, 2026
Jul 10, 2025
N/A· v4
6.1 MEDIUM· v3
N/A· v2
pdfme is a TypeScript-based PDF generator and React-based UI. The expression evaluation feature in pdfme 5.2.0 to 5.4.0 contains critical vulnerabilities allowing sandbox escape leading to XSS and prototype pollution att...Show more
pdfme is a TypeScript-based PDF generator and React-based UI. The expression evaluation feature in pdfme 5.2.0 to 5.4.0 contains critical vulnerabilities allowing sandbox escape leading to XSS and prototype pollution attacks. This vulnerability is fixed in 5.4.1.Show less
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Jun 17, 2026
Jun 25, 2025
N/A· v4
5.7 MEDIUM· v3
N/A· v2
An issue in OneTrust SDK v.6.33.0 allows a local attacker to cause a denial of service via the Object.setPrototypeOf, __proto__, and Object.assign components. NOTE: this is disputed by the Supplier who does not agree it...Show more
An issue in OneTrust SDK v.6.33.0 allows a local attacker to cause a denial of service via the Object.setPrototypeOf, __proto__, and Object.assign components. NOTE: this is disputed by the Supplier who does not agree it is a prototype pollution vulnerability.Show less
1Naver
1Billboard.js
Jun 17, 2026
Jun 4, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
billboard.js before 3.15.1 was discovered to contain a prototype pollution via the function generate, which could allow attackers to execute arbitrary code or cause a Denial of Service (DoS) via injecting arbitrary prope...Show more
billboard.js before 3.15.1 was discovered to contain a prototype pollution via the function generate, which could allow attackers to execute arbitrary code or cause a Denial of Service (DoS) via injecting arbitrary properties.Show less
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Jun 17, 2026
May 27, 2025
6.8 MEDIUM· v4
N/A· v3
N/A· v2
Radashi is a TypeScript utility toolkit. Prior to version 12.5.1, the set function within the Radashi library is vulnerable to prototype pollution. If an attacker can control parts of the path argument to the set functio...Show more
Radashi is a TypeScript utility toolkit. Prior to version 12.5.1, the set function within the Radashi library is vulnerable to prototype pollution. If an attacker can control parts of the path argument to the set function, they could potentially modify the prototype of all objects in the JavaScript runtime, leading to unexpected behavior, denial of service, or even remote code execution in some specific scenarios. This issue has been patched in version 12.5.1. A workaround for this issue involves sanitizing the path argument provided to the set function to ensure that no part of the path string is __proto__, prototype, or constructor.Show less
1Linuxfoundation
1Docarray
Jun 17, 2026
May 25, 2025
5.3 MEDIUM· v4
8.8 HIGH· v3
6.5 MEDIUM· v2
A vulnerability was found in docarray up to 0.40.1. It has been rated as critical. Affected by this issue is the function __getitem__ of the file /docarray/data/torch_dataset.py of the component Web API. The manipulation...Show more
A vulnerability was found in docarray up to 0.40.1. It has been rated as critical. Affected by this issue is the function __getitem__ of the file /docarray/data/torch_dataset.py of the component Web API. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.Show less
1Citeum
1Opencti
Jun 17, 2026
May 19, 2025
N/A· v4
6.8 MEDIUM· v3
N/A· v2
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to version 6.5.2, any user with the capability manage customizations can edit webhook that will execute javascrip...Show more
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to version 6.5.2, any user with the capability manage customizations can edit webhook that will execute javascript code. This can be abused to cause a denial of service attack by prototype pollution, making the node js server running the OpenCTI frontend become unavailable. Version 6.5.2 fixes the issue.Show less
1Elastic
1Kibana
Jun 17, 2026
May 6, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
A Prototype pollution vulnerability in Kibana leads to arbitrary code execution via crafted HTTP requests to machine learning and reporting endpoints.
1Nortikin
1Sverchok
Jun 17, 2026
Apr 27, 2025
5.3 MEDIUM· v4
8.8 HIGH· v3
4.0 MEDIUM· v2
A vulnerability, which was classified as problematic, was found in nortikin Sverchok 1.3.0. Affected is the function SvSetPropNodeMK2 of the file sverchok/nodes/object_nodes/getsetprop_mk2.py of the component Set Propert...Show more
A vulnerability, which was classified as problematic, was found in nortikin Sverchok 1.3.0. Affected is the function SvSetPropNodeMK2 of the file sverchok/nodes/object_nodes/getsetprop_mk2.py of the component Set Property Mk2 Node. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.Show less