CVE-2026-59876mediumCWE-1321

CVE-2026-59876: fallo de gravedad media en protobufjs protobuf.js

protobufjs: Text Format string map parsing can mutate returned map object prototype

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear protobuf.js+ Monitorear protobufjs

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 4.8epss 0.3%
protobufjs compiles protobuf definitions into JavaScript (JS) functions. From 8.2.0 until 8.6.5, the protobufjs Text Format extension parsed string-keyed map entries using ordinary property assignment, allowing a map entry with key __proto__ to change the prototype of the returned map object instead of creating an own map entry in protobufjs/ext/textformat. This issue is fixed in version 8.6.5.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Productos afectados
protobufjs · protobuf.js
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