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CVE-2026-54335

CVE-2026-54335 · Feathersjs: Prototype pollution in @feathersjs/commons _.merge via JSON-parsed __proto__

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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.

CVSS 3.7 · Faible · EPSS 0,4% · Correctif disponible

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Mise à jour

Pile logicielle: node

Produits et versions concernés

  • feathers

    Versions du logiciel
    • < 5.0.45: Concernée

    Aucun correctif publié

  • @feathersjs/commons npm

    Plages de versions concernées
    • SEMVER: < 5.0.45

    Mettez à jour vers 5.0.45

Sources originales

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