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vuln-cve/data/2026/54xxx/CVE-2026-54335.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-54335",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-06-12T19:23:22.316Z",
"datePublished": "2026-07-17T20:56:51.857Z",
"dateUpdated": "2026-07-20T17:38:02.512Z"
},
"containers": {
"cna": {
"title": "Feathersjs: Prototype pollution in @feathersjs/commons _.merge via JSON-parsed __proto__",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1321",
"lang": "en",
"description": "CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 3.7,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/feathersjs/feathers/security/advisories/GHSA-28xv-ph75-77wh",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/feathersjs/feathers/security/advisories/GHSA-28xv-ph75-77wh"
},
{
"name": "https://github.com/feathersjs/feathers/pull/3690",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/feathersjs/feathers/pull/3690"
},
{
"name": "https://github.com/feathersjs/feathers/commit/28b3c03c63bdbff53115fdaa46c56980e7942acc",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/feathersjs/feathers/commit/28b3c03c63bdbff53115fdaa46c56980e7942acc"
},
{
"name": "https://github.com/feathersjs/feathers/releases/tag/v5.0.45",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/feathersjs/feathers/releases/tag/v5.0.45"
}
],
"affected": [
{
"vendor": "feathersjs",
"product": "feathers",
"versions": [
{
"version": "< 5.0.45",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-07-17T20:56:51.857Z"
},
"descriptions": [
{
"lang": "en",
"value": "Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. In 5.0.44 and earlier, the _.merge(target, source) utility exported by @feathersjs/commons recursively merges source into target by iterating Object.keys(source). When source was produced by JSON.parse and contains a __proto__, constructor, or prototype key, that key is returned as an own-enumerable property; the recursive merge then resolves target['__proto__'] to Object.prototype and writes attacker-supplied properties onto it, polluting the prototype for all plain objects in the process for the lifetime of the Node process. This issue is fixed in version 5.0.45."
}
],
"source": {
"advisory": "GHSA-28xv-ph75-77wh",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-07-20T17:37:43.562350Z",
"id": "CVE-2026-54335",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-07-20T17:38:02.512Z"
}
}
]
}
}