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CVE-2025-66456

CVE-2025-66456 · Elysia vulnerable to prototype pollution with multiple standalone schema validation

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Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation and client-server communication. Versions 1.4.0 through 1.4.16 contain a prototype pollution vulnerability in `mergeDeep` after merging results of two standard schema validations with the same key. Due to the ordering of merging, there must be an any type that is set as a standalone guard, to allow for the `__proto__ prop` to be merged. When combined with GHSA-8vch-m3f4-q8jf this allows for a full RCE by an attacker. This issue is fixed in version 1.4.17. To workaround, remove the `__proto__ key` from body.

CVSS 9.1 · Critique · EPSS 0,6% · Correctif disponible

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Mise à jour

Pile logicielle: node

Produits et versions concernés

  • elysia

    Versions du logiciel
    • >= 1.4.0, < 1.4.17: Concernée

    Aucun correctif publié

  • elysia npm

    Plages de versions concernées
    • SEMVER: ≥ 1.4.0, < 1.4.17

    Mettez à jour vers 1.4.17

Sources originales

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