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CVE-2026-44295

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

Published: May 13, 2026Updated: May 19, 2026 Sources: CVE List NVDCWE-94
NVD MITRE
8.7CVSSHIGH
EPSS Score
0.2%
Top 87.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:CC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-94

Affected Products

protobufjs-cliprotobufjs project
Library
OSS Libraries / generic-library
protobuf.jsprotobufjs
Library
OSS Libraries / generic-library
protobufjs projectoss-projectOSS Librariesaka protobufjs, protobufjs-cli
protobufjsoss-projectOSS Librariesaka protobuf.js, protobufjs

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-6r35-46g8-jcw9
github.com

Timeline

Published
May 13, 2026
Last Updated
May 19, 2026
News mentions
1

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