protobufjs-cli vulnerabilities and fixes

Recent CVEs affecting protobufjs-cli, with upgrade or downgrade steps. 2 tracked.

Also searched as: protobufjs cli.

protobufjs-cli has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-06-22. Highest priority: CVE-2026-54271 (score 34/100).

• CVE-2026-54271 HIGH 8.2 UPGRADE protobufjs-cli is the command line add-on for protobuf.js
• CVE-2026-54269 MEDIUM 5.3 UPGRADE UPGRADE protobufjs compiles protobuf definitions into JavaScript (JS) functions

FAQ

How do I fix protobufjs-cli vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is protobufjs-cli being exploited right now?

None of the tracked protobufjs-cli CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which protobufjs-cli CVE should I patch first?

CVE-2026-54271 currently ranks highest (34/100): protobufjs-cli is the command line add-on for protobuf.js.

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