CVE-2026-44294

MEDIUM

protobufjs: Denial of service from crafted field names in generated code

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-44294. PoCs published by HORKimhab.

AI-analyzed exploit summary The repository contains no functional exploit code or technical details about CVE-2026-44294. It only includes a template README with generic setup instructions and a placeholder file structure.

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated JavaScript property accessors from schema-controlled field and oneof names. Certain control characters in field names were not escaped before being embedded into generated function bodies. A crafted schema or JSON descriptor could therefore cause generated encode, decode, verify, or conversion functions to fail during compilation. This vulnerability is fixed in 7.5.6 and 8.0.2.

Exploits (1)

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

The repository contains no functional exploit code or technical details about CVE-2026-44294. It only includes a template README with generic setup instructions and a placeholder file structure.

Classification
Stub 95%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: unspecified
No auth needed
mistral-large-3 · analyzed Jun 10, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 5.3
EPSS 0.0043
EPSS Percentile 34.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-20
Status published
Products (5)
npm/protobufjs 0 - 7.5.6npm
npm/protobufjs 8.0.0 - 8.0.2npm
protobufjs/protobuf.js < 7.5.6
protobufjs/protobuf.js >= 8.0.0, < 8.0.2
protobufjs_project/protobufjs < 7.5.6
Published May 13, 2026
Tracked Since May 13, 2026