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TI-2026-32266 Aliases CVE-2026-44295GHSA-6r35-46g8-jcw9

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

Priority MEDIUM 40CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-94.

Summary

protobufjs-cli is the command line add-on for protobuf.js. Prior to 1.2.1 and 2.0.2, pbjs static code generation could emit unsafe JavaScript identifiers derived from schema-controlled names. When generating static JavaScript from a crafted schema or JSON descriptor, certain namespace, enum, service, or derived full names could be written into the generated output without sufficient sanitization. This vulnerability is fixed in 1.2.1 and 2.0.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00395 33rd percentileScored 2026-11-07
Fix Fixed protobuf.js (protobufjs): 2.0.2, 1.2.1protobufjs-cli (npm): 1.2.1, 2.0.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
protobufjsprotobuf.js2.0.0 to before 2.0.2; before 1.2.12.0.2, 1.2.1Patch availableCNA
—protobufjs-cli (npm)before 1.2.11.2.1Patch availableGHSA-6r35-46g8-jcw9
—protobufjs-cli (npm)2.0.0 to before 2.0.22.0.2Patch availableGHSA-6r35-46g8-jcw9
  • protobuf.js Vendorprotobufjs Affected 2.0.0 to before 2.0.2; before 1.2.1 Fixed in 2.0.2, 1.2.1 Patch available CNA
  • protobufjs-cli (npm) Vendor— Affected before 1.2.1 Fixed in 1.2.1 Patch available GHSA-6r35-46g8-jcw9
  • protobufjs-cli (npm) Vendor— Affected 2.0.0 to before 2.0.2 Fixed in 2.0.2 Patch available GHSA-6r35-46g8-jcw9

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:protobufjs_project:protobufjs-cli:*:*:*:*:*:node.js:*:*before 1.2.1; 2.0.0 to before 2.0.2Vulnerableprotobufjs
  • cpe:2.3:a:protobufjs_project:protobufjs-cli:*:*:*:*:*:node.js:*:* Versions before 1.2.1; 2.0.0 to before 2.0.2 Vulnerable ·protobufjs

Remediation

  • Fix · CNA protobuf.js (protobufjs) Fixed in 2.0.2, 1.2.1
  • Fix · GHSA-6r35-46g8-jcw9 protobufjs-cli (npm) Fixed in 1.2.1 Advisory →
  • Fix · GHSA-6r35-46g8-jcw9 protobufjs-cli (npm) Fixed in 2.0.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44295
  2. 2026-10-03 Alias added: GHSA-6r35-46g8-jcw9

References

Advisory 2

Other 3

  • TI-2026-39171 protobufjs-cli: Code injection in pbjs static output from crafted JSON descriptor names CVSS 3.1HIGH 8.2
  • TI-2026-30601 protobufjs-cli: OS Command Injection CVSS 3.1HIGH 7.8
  • TI-2026-39169 protobufjs: Schema-derived names can shadow runtime-significant properties CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences