Arbitrary Code Injection Affecting protobufjs package, versions <7.6.2>=8.0.0-experimental <8.5.0
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Start learning- Snyk IDSNYK-JS-PROTOBUFJS-17362837
- published17 Jun 2026
- disclosed15 Jun 2026
- creditJacob Brackett
Introduced: 15 Jun 2026
NewCVE-2026-54271 (opens in a new tab)How to fix?
Upgrade protobufjs to version 7.6.2, 8.5.0 or higher.
Overview
protobufjs is a protocol buffer for JavaScript (& TypeScript).
Affected versions of this package are vulnerable to Arbitrary Code Injection via the pbjs static code generation. An attacker can execute arbitrary code by providing crafted schema names that are incorporated into generated JavaScript output, which is then executed or imported by the application or build process.
Note:
This is only exploitable if the application or build process runs pbjs static code generation on a pre-parsed JSON descriptor influenced by an attacker, the generated JavaScript file is subsequently executed or imported, and an affected generated API path is invoked.