CVE-2026-44295

HIGH

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

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-44295. PoCs published by HORKimhab.

AI-analyzed exploit summary The repository contains only a template structure with no actual exploit code or technical details about CVE-2026-44295. It includes placeholder files and a generic README with legal disclaimers but no functional PoC or analysis.

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.

Exploits (1)

github STUB
by HORKimhab · poc
https://github.com/HORKimhab/CVE-2026-442_

The repository contains only a template structure with no actual exploit code or technical details about CVE-2026-44295. It includes placeholder files and a generic README with legal disclaimers but no functional PoC or analysis.

Classification
Stub 95%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: unspecified
No auth needed
Prerequisites: none
mistral-large-3 · analyzed Jun 10, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 8.7
EPSS 0.0040
EPSS Percentile 31.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-94
Status published
Products (5)
npm/protobufjs-cli 0 - 1.2.1npm
npm/protobufjs-cli 2.0.0 - 2.0.2npm
protobufjs/protobuf.js < 1.2.1
protobufjs/protobuf.js >= 2.0.0, < 2.0.2
protobufjs_project/protobufjs-cli < 1.2.1
Published May 13, 2026
Tracked Since May 13, 2026