OS Command Injection in protobufjs-cli - CVE-2026-42290
Published: May 12, 2026
Vulnerability identifier: #VU131159
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-42290
CWE-ID: CWE-78
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 attacker to execute arbitrary shell commands.
The vulnerability exists due to command injection in the pbts CLI tool when processing attacker-influenced input file paths. A remote attacker can supply a crafted file path containing shell metacharacters to execute arbitrary shell commands.
User interaction is required because an application or user must invoke pbts on attacker-influenced paths.
How to mitigate CVE-2026-42290
Install security update from vendor's website.