CVE-2026-54271
High · 8.2CVSS
8.2
EPSS
0.3%
Published
Jun 22, 2026
CISA due date
—
The record
protobufjs-cli is the command line add-on for protobuf.js. Prior to 1.3.2 and 2.5.0, a previous fix for unsafe name handling in pbjs static / static-module code generation was incomplete. Affected versions of protobufjs-cli could still emit unsafe JavaScript references when generating static output from crafted JSON descriptor input. The common case of parsing schemas from .proto files is not affected. This is a bypass of CVE-2026-44295. An attacker who can provide or influence pre-parsed JSON descriptors passed to pbjs static code generation may be able to cause generated JavaScript output to contain attacker-controlled code. The injected code may execute if the generated file is later executed or imported and an affected generated API path is invoked. This vulnerability is fixed in 1.3.2 and 2.5.0.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | protobufjs-cli | 0 | 1.3.2 |
| npm | protobufjs-cli | 2.0.0 | 2.5.0 |
Related vulnerabilities
- GHSA-pr59-h9ph-3fr8 protobufjs-cli: Code injection in pbjs static output from crafted JSON descriptor names Same vulnerability
- CVE-2026-54269 protobufjs compiles protobuf definitions into JavaScript (JS) functions. Also affects protobufjs-cli
- GHSA-f38q-mgvj-vph7 protobufjs : Schema-derived names can shadow runtime-significant properties Also affects protobufjs-cli
- CVE-2026-44295 protobufjs-cli is the command line add-on for protobuf.js. Also affects protobufjs-cli
- CVE-2026-42290 protobufjs-cli is the command line add-on for protobuf.js. Also affects protobufjs-cli
- GHSA-6r35-46g8-jcw9 protobuf.js: Code injection in pbjs static output from crafted schema names Also affects protobufjs-cli
- GHSA-f84p-cvgm-xgjj protobuf.js is Vulnerable to OS Command Injection in the CLI Also affects protobufjs-cli
- CVE-2026-114125 Storybook is a frontend workshop for building user interface components and pages in… CWE-94