Security Advisory

CVE-2026-44291

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-13 14:42:13

Last updated 2026-05-13 15:32:06

Assigner GitHub_M

CVSS score 8.1

State PUBLISHED

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs used plain objects with inherited prototypes for internal type lookup tables used by generated encode and decode functions. If Object.prototype had already been polluted, those lookup tables could resolve attacker-controlled inherited properties as valid protobuf type information. This could cause attacker-controlled strings to be emitted into generated JavaScript code. This vulnerability is fixed in 7.5.6 and 8.0.2.

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