CVE-2026-44290

HIGH

protobufjs: Process-wide denial of service through unsafe option paths

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-44290. PoCs published by HORKimhab.

AI-analyzed exploit summary The repository contains no functional exploit code, only a template README with generic setup instructions and a placeholder for CVE ID formatting. No technical details or actual PoC are provided.

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs allowed certain schema option paths to traverse through inherited object properties while applying options. A crafted protobuf schema or JSON descriptor could cause option handling to write to properties on global JavaScript constructors, corrupting process-wide built-in functionality. 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, only a template README with generic setup instructions and a placeholder for CVE ID formatting. No technical details or actual PoC are provided.

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 7.5
EPSS 0.0037
EPSS Percentile 29.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-1321
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