{"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": "2026-07-17T20:56:51.857Z"}, "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"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.0.45)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "feathers", "source": "cna", "vendor": "feathersjs"}, "product": "feathers", "vendor": "feathersjs"}], "created": "2026-07-17T22:30:04.353575+00:00", "updated": "2026-07-17T22:30:04.353613+00:00", "vendors": ["feathersjs", "feathersjs$PRODUCT$feathers"]}