What is CVE-2026-54271?

CVE-2026-54271 is a high-severity vulnerability in Protobufjs Protobufjs-cli, classified under Code Injection. CVSS score: 8.2/10. Published 2026-06-22.

How severe is CVE-2026-54271?

High severity. CVSS v3 base score is 8.2 out of 10.

RCE in Protobufjs Protobufjs-cli

CVE-2026-54271

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 emi…

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L.

Affected products

Protobufjs Protobufjs-cli — versions < 1.3.2, >= 2.0.0, < 2.4.2

Weakness classification (CWE)

CWE-94 — Code Injection

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-54271?: CVE-2026-54271 is a high-severity vulnerability in Protobufjs Protobufjs-cli, classified under Code Injection. CVSS score: 8.2/10. Published 2026-06-22.
How severe is CVE-2026-54271?: High severity. CVSS v3 base score is 8.2 out of 10.