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CWE-1321

624 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 (624)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Springtree
1Madlib Object Utils
Jun 17, 2026
Apr 15, 2022
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
The package madlib-object-utils before 0.1.8 are vulnerable to Prototype Pollution via the setValue method, as it allows an attacker to merge object prototypes into it. *Note:* This vulnerability derives from an incomple...Show more
The package madlib-object-utils before 0.1.8 are vulnerable to Prototype Pollution via the setValue method, as it allows an attacker to merge object prototypes into it. *Note:* This vulnerability derives from an incomplete fix of [CVE-2020-7701](https://security.snyk.io/vuln/SNYK-JS-MADLIBOBJECTUTILS-598676)Show less
1Nconf Project
1Nconf
Jun 17, 2026
Apr 12, 2022
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
This affects the package nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuratio...Show more
This affects the package nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.Show less
1Fullpage Project
1Fullpage
Jun 17, 2026
Apr 11, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Prototype Pollution in GitHub repository alvarotrigo/fullpage.js prior to 4.0.2.
2Async Project
Fedoraproject
2Async
Fedora
Jun 17, 2026
Apr 6, 2022
N/A· v4
7.8 HIGH· v3
6.8 MEDIUM· v2
In Async before 2.6.4 and 3.x before 3.2.2, a malicious user can obtain privileges via the mapValues() method, aka lib/internal/iterator.js createObjectIterator prototype pollution.
1Deepmerge Ts Project
1Deepmerge Ts
Jun 17, 2026
Apr 1, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
deepmerge-ts is a typescript library providing functionality to deep merging of javascript objects. deepmerge-ts is vulnerable to Prototype Pollution via file deepmerge.ts, function defaultMergeRecords(). This issue has...Show more
deepmerge-ts is a typescript library providing functionality to deep merging of javascript objects. deepmerge-ts is vulnerable to Prototype Pollution via file deepmerge.ts, function defaultMergeRecords(). This issue has been patched in version 4.0.2. There are no known workarounds for this issue.Show less
1Simple Plist Project
1Simple Plist
Jun 17, 2026
Mar 22, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Simple-Plist v1.3.0 was discovered to contain a prototype pollution vulnerability via .parse().
1Substack
1Minimist
Oct 8, 2026
Mar 17, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Minimist <=1.2.5 is vulnerable to Prototype Pollution via file index.js, function setKey() (lines 69-95).
1Set In Project
1Set In
Jun 17, 2026
Mar 17, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
The package set-in before 2.0.3 are vulnerable to Prototype Pollution via the setIn method, as it allows an attacker to merge object prototypes into it. **Note:** This vulnerability derives from an incomplete fix of [CVE...Show more
The package set-in before 2.0.3 are vulnerable to Prototype Pollution via the setIn method, as it allows an attacker to merge object prototypes into it. **Note:** This vulnerability derives from an incomplete fix of [CVE-2020-28273](https://security.snyk.io/vuln/SNYK-JS-SETIN-1048049)Show less
1Libnested Project
1Libnested
Jun 17, 2026
Mar 17, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
The package libnested before 1.5.2 are vulnerable to Prototype Pollution via the set function in index.js. **Note:** This vulnerability derives from an incomplete fix for [CVE-2020-28283](https://security.snyk.io/vuln/SN...Show more
The package libnested before 1.5.2 are vulnerable to Prototype Pollution via the set function in index.js. **Note:** This vulnerability derives from an incomplete fix for [CVE-2020-28283](https://security.snyk.io/vuln/SNYK-JS-LIBNESTED-1054930)Show less
1Bodymen Project
1Bodymen
Jun 17, 2026
Mar 17, 2022
N/A· v4
7.3 HIGH· v3
7.5 HIGH· v2
The package bodymen from 0.0.0 are vulnerable to Prototype Pollution via the handler function which could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload. **Note:** This vulne...Show more
The package bodymen from 0.0.0 are vulnerable to Prototype Pollution via the handler function which could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload. **Note:** This vulnerability derives from an incomplete fix to [CVE-2019-10792](https://security.snyk.io/vuln/SNYK-JS-BODYMEN-548897)Show less
1Sailsjs
1Sails
Jun 17, 2026
Mar 17, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
SailsJS Sails.js <=1.4.0 is vulnerable to Prototype Pollution via controller/load-action-modules.js, function loadActionModules().
2Argencoders Notevil Project
Notevil Project
2Argencoders Notevil
Notevil
Jun 17, 2026
Mar 17, 2022
N/A· v4
6.5 MEDIUM· v3
6.4 MEDIUM· v2
This affects all versions of package notevil; all versions of package argencoders-notevil. It is vulnerable to Sandbox Escape leading to Prototype pollution. The package fails to restrict access to the main context, allo...Show more
This affects all versions of package notevil; all versions of package argencoders-notevil. It is vulnerable to Sandbox Escape leading to Prototype pollution. The package fails to restrict access to the main context, allowing an attacker to add or modify an object's prototype. **Note:** This vulnerability derives from an incomplete fix in [SNYK-JS-NOTEVIL-608878](https://security.snyk.io/vuln/SNYK-JS-NOTEVIL-608878).Show less
1Atlassian
2Crucible
Fisheye
Jun 17, 2026
Mar 16, 2022
N/A· v4
6.1 MEDIUM· v3
4.3 MEDIUM· v2
The jQuery deserialize library in Fisheye and Crucible before version 4.8.9 allowed remote attackers to to inject arbitrary HTML and/or JavaScript via a prototype pollution vulnerability.
1Parseplatform
1Parse Server
Jun 17, 2026
Mar 12, 2022
N/A· v4
10.0 CRITICAL· v3
7.5 HIGH· v2
Parse Server is an open source http web server backend. In versions prior to 4.10.7 there is a Remote Code Execution (RCE) vulnerability in Parse Server. This vulnerability affects Parse Server in the default configurati...Show more
Parse Server is an open source http web server backend. In versions prior to 4.10.7 there is a Remote Code Execution (RCE) vulnerability in Parse Server. This vulnerability affects Parse Server in the default configuration with MongoDB. The main weakness that leads to RCE is the Prototype Pollution vulnerable code in the file `DatabaseController.js`, so it is likely to affect Postgres and any other database backend as well. This vulnerability has been confirmed on Linux (Ubuntu) and Windows. Users are advised to upgrade as soon as possible. The only known workaround is to manually patch your installation with code referenced at the source GHSA-p6h4-93qp-jhcm.Show less
1Jquery.cookie Project
1Jquery.cookie
Jun 17, 2026
Mar 2, 2022
N/A· v4
6.1 MEDIUM· v3
4.3 MEDIUM· v2
jQuery Cookie 1.4.1 is affected by prototype pollution, which can lead to DOM cross-site scripting (XSS).
4Debian
NetappNodejs+1 more
11Debian Linux
Mysql ClusterMysql Connectors+8 more
Jun 17, 2026
Feb 24, 2022
N/A· v4
8.2 HIGH· v3
6.4 MEDIUM· v2
Due to the formatting logic of the "console.table()" function it was not safe to allow user controlled input to be passed to the "properties" parameter while simultaneously passing a plain object with at least one proper...Show more
Due to the formatting logic of the "console.table()" function it was not safe to allow user controlled input to be passed to the "properties" parameter while simultaneously passing a plain object with at least one property as the first parameter, which could be "__proto__". The prototype pollution has very limited control, in that it only allows an empty string to be assigned to numerical keys of the object prototype.Node.js >= 12.22.9, >= 14.18.3, >= 16.13.2, and >= 17.3.1 use a null protoype for the object these properties are being assigned to.Show less
1Object Extend Project
1Object Extend
Jun 17, 2026
Feb 18, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
The package object-extend from 0.0.0 are vulnerable to Prototype Pollution via object-extend.
1Plist Project
1Plist
Jun 17, 2026
Feb 17, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Prototype pollution vulnerability via .parse() in Plist before v3.0.4 allows attackers to cause a Denial of Service (DoS) and may lead to remote code execution.
2Appwrite
Litespeed.js Project
2Appwrite
Litespeed.js
Jun 17, 2026
Feb 16, 2022
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
This affects the package litespeed.js before 0.3.12; the package appwrite/server-ce from 0.12.0 and before 0.12.2, before 0.11.1. When parsing the query string in the getJsonFromUrl function, the key that is set in the r...Show more
This affects the package litespeed.js before 0.3.12; the package appwrite/server-ce from 0.12.0 and before 0.12.2, before 0.11.1. When parsing the query string in the getJsonFromUrl function, the key that is set in the result object is not properly sanitized leading to a Prototype Pollution vulnerability.Show less
1Fastify
1Fastify Multipart
Jun 17, 2026
Feb 11, 2022
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
This affects the package fastify-multipart before 5.3.1. By providing a name=constructor property it is still possible to crash the application. **Note:** This is a bypass of CVE-2020-8136 (https://security.snyk.io/vuln/...Show more
This affects the package fastify-multipart before 5.3.1. By providing a name=constructor property it is still possible to crash the application. **Note:** This is a bypass of CVE-2020-8136 (https://security.snyk.io/vuln/SNYK-JS-FASTIFYMULTIPART-1290382).Show less