CVE-2026-44295

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

State: Published
Severity: 8.7 High
Published: May 13, 2026
Updated: May 13, 2026
Reserved: May 5, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N	GitHub_M

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
protobuf.jsprotobufjs	>= 2.0.0, < 2.0.2Affected < 1.2.1Affected

References

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-6r35-46g8-jcw9

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