CVE-2026-54270
CVE-2026-54270 · protobufjs: Memory amplification from preserved unknown fields in binary decode
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protobufjs compiles protobuf definitions into JavaScript (JS) functions. From 8.2.0 to 8.4.2, protobufjs preserved unknown wire elements in message.$unknowns and did not provide a decode-time option to discard unknown fields before retaining them. A crafted protobuf payload containing many unknown fields could therefore cause a decoded message to retain substantially more memory than the input size would suggest, even when unknown-field round-tripping is not needed. protobufjs 8.5.0 added the relevant decode-time options, allowing applications that decode untrusted protobuf data to disable unknown-field retention during decode. protobufjs 8.6.2 flips the default so unknown fields are discarded unless explicitly opted into.
CVSS 5.3 · Moyenne · EPSS 0,4% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
protobuf.js
- Versions du logiciel
- >=8.2.0, < 8.5.0: Concernée
Aucun correctif publié
protobufjs npm
- Plages de versions concernées
- SEMVER: ≥ 8.2.0, < 8.5.0
Mettez à jour vers 8.5.0