CWE-1321
AllowedImproperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Abstraction: Variant · Status: Incomplete
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.
866 vulnerabilities reference this CWE, most recent first.
GHSA-F4JP-RW7W-CCWG
Vulnerability from github – Published: 2026-08-20 20:11 – Updated: 2026-08-20 20:11Impact
js2i18next() is vulnerable to prototype pollution. When converting translations, it splits nested keys on the key separator (default ##) and uses each segment as a dynamic object key while building the output object. A key whose segment is __proto__ (e.g. __proto__##gcPolluted) causes the converter to resolve Object.prototype as the nested write target and assign the translated value onto it, polluting Object.prototype for the whole runtime.
Any application that converts translation data (PO / i18next JS objects) originating from an untrusted or user-controlled source is affected. Prototype pollution can lead to denial of service and, depending on the surrounding application, may enable further attacks.
Patches
Fixed in gettext-converter@1.3.3. Key segments equal to __proto__, constructor, or prototype are now rejected before being used as dynamic object keys.
Workarounds
Upgrade to 1.3.3. If upgrading is not immediately possible, sanitize/validate translation keys before passing them to js2i18next() and reject any key whose ##-separated segments include __proto__, constructor, or prototype.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "gettext-converter"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-55451"
],
"database_specific": {
"cwe_ids": [
"CWE-1321"
],
"github_reviewed": true,
"github_reviewed_at": "2026-08-20T20:11:13Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "### Impact\n\n`js2i18next()` is vulnerable to prototype pollution. When converting translations, it splits nested keys on the key separator (default `##`) and uses each segment as a dynamic object key while building the output object. A key whose segment is `__proto__` (e.g. `__proto__##gcPolluted`) causes the converter to resolve `Object.prototype` as the nested write target and assign the translated value onto it, polluting `Object.prototype` for the whole runtime.\n\nAny application that converts translation data (PO / i18next JS objects) originating from an untrusted or user-controlled source is affected. Prototype pollution can lead to denial of service and, depending on the surrounding application, may enable further attacks.\n\n### Patches\n\nFixed in `gettext-converter@1.3.3`. Key segments equal to `__proto__`, `constructor`, or `prototype` are now rejected before being used as dynamic object keys.\n\n### Workarounds\n\nUpgrade to `1.3.3`. If upgrading is not immediately possible, sanitize/validate translation keys before passing them to `js2i18next()` and reject any key whose `##`-separated segments include `__proto__`, `constructor`, or `prototype`.",
"id": "GHSA-f4jp-rw7w-ccwg",
"modified": "2026-08-20T20:11:13Z",
"published": "2026-08-20T20:11:13Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/locize/gettext-converter/security/advisories/GHSA-f4jp-rw7w-ccwg"
},
{
"type": "WEB",
"url": "https://github.com/locize/gettext-converter/issues/15"
},
{
"type": "WEB",
"url": "https://github.com/locize/gettext-converter/commit/df90c3b93e51faef68891d97b626544f619c5b31"
},
{
"type": "PACKAGE",
"url": "https://github.com/locize/gettext-converter"
},
{
"type": "WEB",
"url": "https://github.com/locize/gettext-converter/releases/tag/v1.3.3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "gettext-converter: Prototype pollution in js2i18next() via crafted translation keys"
}
GHSA-F5X2-VJ4H-VG4C
Vulnerability from github – Published: 2026-02-06 19:27 – Updated: 2026-02-07 00:33Description
A Prototype Pollution vulnerability (CWE-1321) in AdonisJS multipart form-data parsing may allow a remote attacker to manipulate object prototypes at runtime. This impacts @adonisjs/bodyparser through version 10.1.2 and 11.x prerelease versions prior to 11.0.0-next.8. This issue has been patched in @adonisjs/bodyparser versions 10.1.3 and 11.0.0-next.9
Details
AdonisJS parses multipart/form-data requests via the BodyParser package. During multipart parsing, form field names are used to construct plain JavaScript objects representing the parsed request body.
Due to insufficient validation of multipart field names, specially crafted fields containing reserved property names such as __proto__, constructor, or prototype could be assigned directly to objects created during parsing. This allows an attacker to pollute object prototypes, potentially affecting other parts of the application that rely on these objects.
The vulnerability is limited to multipart request parsing and does not affect JSON or URL-encoded body parsing.
Impact
Exploitation requires an application endpoint that accepts and parses multipart/form-data requests.
If exploited, prototype pollution may lead to unexpected application behavior, logic bypasses, or security issues depending on how polluted objects are later consumed. The severity of the impact depends on application logic and usage patterns of the parsed request data.
Patches
Fixes targeting v6 and v7 have been published below.
Users should upgrade to a version that includes the following fix: - https://github.com/adonisjs/bodyparser/releases/tag/v10.1.3 - https://github.com/adonisjs/bodyparser/releases/tag/v11.0.0-next.9
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 10.1.2"
},
"package": {
"ecosystem": "npm",
"name": "@adonisjs/bodyparser"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.1.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 11.0.0-next.8"
},
"package": {
"ecosystem": "npm",
"name": "@adonisjs/bodyparser"
},
"ranges": [
{
"events": [
{
"introduced": "11.0.0-next.0"
},
{
"fixed": "11.0.0-next.9"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-25754"
],
"database_specific": {
"cwe_ids": [
"CWE-1321"
],
"github_reviewed": true,
"github_reviewed_at": "2026-02-06T19:27:30Z",
"nvd_published_at": "2026-02-06T23:15:54Z",
"severity": "HIGH"
},
"details": "### Description\n\nA Prototype Pollution vulnerability (CWE-1321) in AdonisJS multipart form-data parsing may allow a remote attacker to manipulate object prototypes at runtime. This impacts `@adonisjs/bodyparser` through version `10.1.2` and `11.x` prerelease versions prior to `11.0.0-next.8`. This issue has been patched in `@adonisjs/bodyparser` versions `10.1.3` and `11.0.0-next.9`\n\n### Details\n\nAdonisJS parses `multipart/form-data` requests via the BodyParser package. During multipart parsing, form field names are used to construct plain JavaScript objects representing the parsed request body.\n\nDue to insufficient validation of multipart field names, specially crafted fields containing reserved property names such as `__proto__`, `constructor`, or `prototype` could be assigned directly to objects created during parsing. This allows an attacker to pollute object prototypes, potentially affecting other parts of the application that rely on these objects.\n\n**The vulnerability is limited to multipart request parsing and does not affect JSON or URL-encoded body parsing.**\n\n### Impact\n\nExploitation requires an application endpoint that accepts and parses `multipart/form-data` requests.\n\nIf exploited, prototype pollution may lead to unexpected application behavior, logic bypasses, or security issues depending on how polluted objects are later consumed. The severity of the impact depends on application logic and usage patterns of the parsed request data.\n\n### Patches\n\nFixes targeting v6 and v7 have been published below.\n\nUsers should upgrade to a version that includes the following fix:\n- https://github.com/adonisjs/bodyparser/releases/tag/v10.1.3\n- https://github.com/adonisjs/bodyparser/releases/tag/v11.0.0-next.9",
"id": "GHSA-f5x2-vj4h-vg4c",
"modified": "2026-02-07T00:33:30Z",
"published": "2026-02-06T19:27:30Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/adonisjs/core/security/advisories/GHSA-f5x2-vj4h-vg4c"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25754"
},
{
"type": "WEB",
"url": "https://github.com/adonisjs/bodyparser/commit/40e1c71f958cffb74f6b91bed6630dca979062ed"
},
{
"type": "WEB",
"url": "https://github.com/adonisjs/bodyparser/releases/tag/v11.0.0-next.9"
},
{
"type": "PACKAGE",
"url": "https://github.com/adonisjs/core"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "AdonisJS multipart body parsing has Prototype Pollution issue"
}
GHSA-F6V4-CF5J-VF3W
Vulnerability from github – Published: 2024-09-11 06:30 – Updated: 2024-09-11 23:11Versions of the package dset before 3.1.4 are vulnerable to Prototype Pollution via the dset function due improper user input sanitization. This vulnerability allows the attacker to inject malicious object property using the built-in Object property proto, which is recursively assigned to all the objects in the program.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "dset"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-21529"
],
"database_specific": {
"cwe_ids": [
"CWE-1321"
],
"github_reviewed": true,
"github_reviewed_at": "2024-09-11T23:11:10Z",
"nvd_published_at": "2024-09-11T05:15:02Z",
"severity": "HIGH"
},
"details": "Versions of the package dset before 3.1.4 are vulnerable to Prototype Pollution via the dset function due improper user input sanitization. This vulnerability allows the attacker to inject malicious object property using the built-in Object property __proto__, which is recursively assigned to all the objects in the program.",
"id": "GHSA-f6v4-cf5j-vf3w",
"modified": "2024-09-11T23:11:10Z",
"published": "2024-09-11T06:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21529"
},
{
"type": "WEB",
"url": "https://github.com/lukeed/dset/commit/16d6154e085bef01e99f01330e5a421a7f098afa"
},
{
"type": "PACKAGE",
"url": "https://github.com/lukeed/dset"
},
{
"type": "WEB",
"url": "https://security.snyk.io/vuln/SNYK-JS-DSET-7116691"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "dset Prototype Pollution vulnerability"
}
GHSA-F737-3FH6-JF6W
Vulnerability from github – Published: 2023-04-26 21:30 – Updated: 2023-07-07 22:20vConsole was discovered to contain a prototype pollution due to incorrect key and value resolution in setOptions in core.ts.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "vconsole"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.15.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-30363"
],
"database_specific": {
"cwe_ids": [
"CWE-1321"
],
"github_reviewed": true,
"github_reviewed_at": "2023-04-27T13:58:23Z",
"nvd_published_at": "2023-04-26T21:15:09Z",
"severity": "CRITICAL"
},
"details": "vConsole was discovered to contain a prototype pollution due to incorrect key and value resolution in setOptions in core.ts.",
"id": "GHSA-f737-3fh6-jf6w",
"modified": "2023-07-07T22:20:18Z",
"published": "2023-04-26T21:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-30363"
},
{
"type": "WEB",
"url": "https://github.com/Tencent/vConsole/issues/616"
},
{
"type": "WEB",
"url": "https://github.com/Tencent/vConsole/commit/b91591703490e032451f7734212f6458bde9be6a"
},
{
"type": "WEB",
"url": "https://cwe.mitre.org/data/definitions/1321.html"
},
{
"type": "PACKAGE",
"url": "https://github.com/Tencent/vConsole"
},
{
"type": "WEB",
"url": "https://github.com/Tencent/vConsole/releases/tag/v3.15.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Prototype Pollution in vConsole"
}
GHSA-F74F-3RWG-525W
Vulnerability from github – Published: 2025-02-06 06:31 – Updated: 2025-02-06 18:31A prototype pollution in the lib.setValue function of @syncfusion/ej2-spreadsheet v27.2.2 allows attackers to cause a Denial of Service (DoS) via supplying a crafted payload.
{
"affected": [],
"aliases": [
"CVE-2024-57064"
],
"database_specific": {
"cwe_ids": [
"CWE-1321"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-05T22:15:30Z",
"severity": "HIGH"
},
"details": "A prototype pollution in the lib.setValue function of @syncfusion/ej2-spreadsheet v27.2.2 allows attackers to cause a Denial of Service (DoS) via supplying a crafted payload.",
"id": "GHSA-f74f-3rwg-525w",
"modified": "2025-02-06T18:31:05Z",
"published": "2025-02-06T06:31:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57064"
},
{
"type": "WEB",
"url": "https://gist.github.com/tariqhawis/1b40dc7f3836813663c871535039760e"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-F7F6-9JQ7-3RQJ
Vulnerability from github – Published: 2025-04-07 19:09 – Updated: 2025-04-07 19:09Impact
When generating an ESTree from a value with a property named __proto__, valueToEstree would generate an object that specifies a prototype instead.
Example:
import { generate } from 'astring'
import { valueToEstree } from 'estree-util-value-to-estree'
const estree = valueToEstree({
['__proto__']: {}
})
const code = generate(estree)
console.log(code)
Output:
{
"__proto__": {}
}
Patches
This was fixed in version 3.3.3.
Workarounds
If you control the input, don’t specify a property named __proto__. If you don’t control the output, strip any properties named __proto__ before passing it to valueToEstree.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "estree-util-value-to-estree"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.3.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-32014"
],
"database_specific": {
"cwe_ids": [
"CWE-1321"
],
"github_reviewed": true,
"github_reviewed_at": "2025-04-07T19:09:48Z",
"nvd_published_at": "2025-04-07T15:15:44Z",
"severity": "MODERATE"
},
"details": "### Impact\nWhen generating an ESTree from a value with a property named `__proto__`, `valueToEstree` would generate an object that specifies a prototype instead.\n\nExample:\n\n```js\nimport { generate } from \u0027astring\u0027\nimport { valueToEstree } from \u0027estree-util-value-to-estree\u0027\n\nconst estree = valueToEstree({\n [\u0027__proto__\u0027]: {}\n})\nconst code = generate(estree)\nconsole.log(code)\n```\n\nOutput:\n\n```js\n{\n \"__proto__\": {}\n}\n```\n\n### Patches\nThis was fixed in version [3.3.3](https://github.com/remcohaszing/estree-util-value-to-estree/releases/tag/v3.3.3).\n\n### Workarounds\nIf you control the input, don\u2019t specify a property named `__proto__`. If you don\u2019t control the output, strip any properties named `__proto__` before passing it to `valueToEstree`.",
"id": "GHSA-f7f6-9jq7-3rqj",
"modified": "2025-04-07T19:09:48Z",
"published": "2025-04-07T19:09:48Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/remcohaszing/estree-util-value-to-estree/security/advisories/GHSA-f7f6-9jq7-3rqj"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-32014"
},
{
"type": "WEB",
"url": "https://github.com/remcohaszing/estree-util-value-to-estree/commit/d0c394fbc64bc55937ffe4e162b81f15ba506e55"
},
{
"type": "PACKAGE",
"url": "https://github.com/remcohaszing/estree-util-value-to-estree"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
],
"summary": "estree-util-value-to-estree allows prototype pollution in generated ESTree"
}
GHSA-F825-F98C-GJ3G
Vulnerability from github – Published: 2022-07-29 00:00 – Updated: 2023-09-11 16:22Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Affected versions of this package are vulnerable to Prototype Pollution. The Schema.path() function is vulnerable to prototype pollution when setting the schema object. This vulnerability allows modification of the Object prototype and could be manipulated into a Denial of Service (DoS) attack.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "mongoose"
},
"ranges": [
{
"events": [
{
"introduced": "6.0.0"
},
{
"fixed": "6.4.6"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "npm",
"name": "mongoose"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.13.15"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-2564"
],
"database_specific": {
"cwe_ids": [
"CWE-1321"
],
"github_reviewed": true,
"github_reviewed_at": "2022-08-04T14:22:23Z",
"nvd_published_at": "2022-07-28T20:15:00Z",
"severity": "HIGH"
},
"details": "Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Affected versions of this package are vulnerable to Prototype Pollution. The `Schema.path()` function is vulnerable to prototype pollution when setting the schema object. This vulnerability allows modification of the Object prototype and could be manipulated into a Denial of Service (DoS) attack.",
"id": "GHSA-f825-f98c-gj3g",
"modified": "2023-09-11T16:22:58Z",
"published": "2022-07-29T00:00:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2564"
},
{
"type": "WEB",
"url": "https://github.com/Automattic/mongoose/commit/99b418941e2fc974199b8e5bd9d382bb50bf680a"
},
{
"type": "WEB",
"url": "https://github.com/automattic/mongoose/commit/a45cfb6b0ce0067ae9794cfa80f7917e1fb3c6f8"
},
{
"type": "WEB",
"url": "https://github.com/Automattic/mongoose/blob/51e758541763b6f14569744ced15cc23ab8b50c6/lib/schema.js#L88-L141"
},
{
"type": "WEB",
"url": "https://github.com/Automattic/mongoose/blob/master/CHANGELOG.md"
},
{
"type": "WEB",
"url": "https://github.com/Automattic/mongoose/compare/6.4.5...6.4.6"
},
{
"type": "WEB",
"url": "https://github.com/automattic/mongoose"
},
{
"type": "WEB",
"url": "https://huntr.dev/bounties/055be524-9296-4b2f-b68d-6d5b810d1ddd"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H",
"type": "CVSS_V3"
}
],
"summary": "automattic/mongoose vulnerable to Prototype pollution via Schema.path"
}
GHSA-F8H3-RQRM-47V9
Vulnerability from github – Published: 2020-09-02 16:02 – Updated: 2020-08-31 18:36All versions of smart-extend are vulnerable to Prototype Pollution. The deep() function allows attackers to modify the prototype of Object causing the addition or modification of an existing property that will exist on all objects.
Recommendation
No fix is currently available. Consider using an alternative module until a fix is made available.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "smart-extend"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-1321"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:36:15Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "All versions of `smart-extend` are vulnerable to Prototype Pollution. The `deep()` function allows attackers to modify the prototype of Object causing the addition or modification of an existing property that will exist on all objects.\n\n\n\n\n## Recommendation\n\nNo fix is currently available. Consider using an alternative module until a fix is made available.",
"id": "GHSA-f8h3-rqrm-47v9",
"modified": "2020-08-31T18:36:15Z",
"published": "2020-09-02T16:02:40Z",
"references": [
{
"type": "WEB",
"url": "https://hackerone.com/reports/438274"
},
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/801"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "Prototype Pollution in smart-extend"
}
GHSA-F98M-Q3HR-P5WQ
Vulnerability from github – Published: 2021-05-06 18:12 – Updated: 2021-12-14 15:33All versions of package locutus prior to version 2.0.12 are vulnerable to Prototype Pollution via the php.strings.parse_str function.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "locutus"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.12"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-7719"
],
"database_specific": {
"cwe_ids": [
"CWE-1321",
"CWE-20",
"CWE-915"
],
"github_reviewed": true,
"github_reviewed_at": "2021-05-05T18:44:01Z",
"nvd_published_at": "2020-09-01T10:15:00Z",
"severity": "CRITICAL"
},
"details": "All versions of package locutus prior to version 2.0.12 are vulnerable to Prototype Pollution via the php.strings.parse_str function.",
"id": "GHSA-f98m-q3hr-p5wq",
"modified": "2021-12-14T15:33:28Z",
"published": "2021-05-06T18:12:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-7719"
},
{
"type": "WEB",
"url": "https://github.com/kvz/locutus/pull/418"
},
{
"type": "WEB",
"url": "https://github.com/locutusjs/locutus/commit/0eb16d8541838e80f3c2340a9ef93ded7c97290f"
},
{
"type": "PACKAGE",
"url": "https://github.com/kvz/locutus"
},
{
"type": "WEB",
"url": "https://snyk.io/vuln/SNYK-JS-LOCUTUS-598675"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Prototype Pollution in locutus"
}
GHSA-F9CM-QMX5-M98H
Vulnerability from github – Published: 2018-11-01 14:45 – Updated: 2023-09-07 20:34Versions of merge before 1.2.1 are vulnerable to prototype pollution. The merge.recursive function can be tricked into adding or modifying properties of the Object prototype.
Recommendation
Update to version 1.2.1 or later.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "merge"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-16469"
],
"database_specific": {
"cwe_ids": [
"CWE-1321",
"CWE-400"
],
"github_reviewed": true,
"github_reviewed_at": "2020-06-16T21:34:14Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "Versions of `merge` before 1.2.1 are vulnerable to prototype pollution. The `merge.recursive` function can be tricked into adding or modifying properties of the Object prototype.\n\n\n## Recommendation\n\nUpdate to version 1.2.1 or later.",
"id": "GHSA-f9cm-qmx5-m98h",
"modified": "2023-09-07T20:34:10Z",
"published": "2018-11-01T14:45:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-16469"
},
{
"type": "WEB",
"url": "https://hackerone.com/reports/381194"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-f9cm-qmx5-m98h"
},
{
"type": "WEB",
"url": "https://www.npmjs.com/advisories/722"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Prototype Pollution in merge"
}
Mitigation
By freezing the object prototype first (for example, Object.freeze(Object.prototype)), modification of the prototype becomes impossible.
Mitigation
By blocking modifications of attributes that resolve to object prototype, such as proto or prototype, this weakness can be mitigated.
Mitigation
Strategy: Input Validation
When handling untrusted objects, validating using a schema can be used.
Mitigation
By using an object without prototypes (via Object.create(null) ), adding object prototype attributes by accessing the prototype via the special attributes becomes impossible, mitigating this weakness.
Mitigation
Map can be used instead of objects in most cases. If Map methods are used instead of object attributes, it is not possible to access the object prototype or modify it.
CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs
In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.
CAPEC-180: Exploiting Incorrectly Configured Access Control Security Levels
An attacker exploits a weakness in the configuration of access controls and is able to bypass the intended protection that these measures guard against and thereby obtain unauthorized access to the system or network. Sensitive functionality should always be protected with access controls. However configuring all but the most trivial access control systems can be very complicated and there are many opportunities for mistakes. If an attacker can learn of incorrectly configured access security settings, they may be able to exploit this in an attack.
CAPEC-77: Manipulating User-Controlled Variables
This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An adversary can override variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the adversary can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.