Code Injection in protobufjs-cli - CVE-2026-44295
Published: May 12, 2026
Vulnerability identifier: #VU131161
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-44295
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: protobuf.js
Affected software:
protobufjs-cli
protobufjs-cli
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to improper control of code generation in pbjs static code generation output when processing a crafted schema or JSON descriptor. A remote user can provide crafted schema names to inject attacker-controlled code into generated JavaScript output to execute arbitrary code.
User interaction is required because the generated JavaScript file must later be executed, imported, or otherwise evaluated.
How to mitigate CVE-2026-44295
Install security update from vendor's website.