CVE-2026-44295 HIGH

CVE-2026-44295: protobufjs-cli: Code injection in pbjs static output from crafted schema names

Vendor Protobufjs
Product protobuf.js
Weakness CWE-94 · Code injection
Published May 13, 2026
Last update May 13, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

What the vulnerability does

01Description

protobufjs-cli is the command line add-on for protobuf.js. Prior to 1.2.1 and 2.0.2, pbjs static code generation could emit unsafe JavaScript identifiers derived from schema-controlled names. When generating static JavaScript from a crafted schema or JSON descriptor, certain namespace, enum, service, or derived full names could be written into the generated output without sufficient sanitization. This vulnerability is fixed in 1.2.1 and 2.0.2.

Key dates

02Disclosure timeline

May 13, 2026 CVE published
May 13, 2026 Record updated