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CVE-2026-64647

CVE-2026-64647 · Next.js: Response Body Cache Confusion with Invalid UTF-8 Request Bodies

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Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a server-side fetch with a request body may return a cached response body from a different request to the same URL but different body. Confidential data in the POST's response body would then leak to unauthorized requests. Though the request itself will not be deduped. This is only an issue when receiving request bodies with a content type charset other than UTF-8. For example, the UTF-16 byte sequences for 삃삃 and 섄섄 in the request body would share the same cache. This issue has been fixed in versions 15.5.21 and 16.2.11.

CVSS 6.3 · Moyenne · EPSS 0,3% · Correctif disponible

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Mise à jour

Pile logicielle: node

Produits et versions concernés

  • next.js

    Versions du logiciel
    • >= 13.0.0, < 15.5.21: Concernée
    • >= 16.0.0, < 16.2.11: Concernée

    Aucun correctif publié

  • next npm

    Plages de versions concernées
    • SEMVER: ≥ 13.0.0, < 15.5.21

    Mettez à jour vers 15.5.21

  • next npm

    Plages de versions concernées
    • SEMVER: ≥ 16.0.0, < 16.2.11

    Mettez à jour vers 16.2.11

Sources originales

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