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OpenAdvisories
High · 8.2 CVE-2026-54271 EUVD-2026-38304GHSA-pr59-h9ph-3fr8

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

Published Jun 22, 2026 · Updated Jun 23, 2026 · Assigned by GitHub_M

Description

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 products

VendorProductAffectedFixed
protobufjs protobufjs-cli < 1.3.2, >= 2.0.0, < 2.4.2 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling vitess-24 24.0.1-r4 —
Wolfi rolling vitess-24-compat 24.0.3-r7 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm protobufjs-cli < 1.3.2 1.3.2 GHSA-pr59-h9ph-3fr8
npm protobufjs-cli >= 2.0.0, < 2.5.0 2.5.0 GHSA-pr59-h9ph-3fr8

References