CVE-2026-44289

HIGH

protobufjs: Denial of service through unbounded protobuf recursion

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-44289. PoCs published by HORKimhab.

AI-analyzed exploit summary This repository is a template or placeholder for a CVE project with no actual exploit code, technical details, or functional proof-of-concept. It includes only boilerplate setup instructions, a generic README, and a license file.

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs could recurse without a depth limit while decoding nested protobuf data. This affected both skipping unknown group fields and generated decoding of nested message fields. A crafted protobuf binary payload could cause the JavaScript call stack to be exhausted during decoding. 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_

This repository is a template or placeholder for a CVE project with no actual exploit code, technical details, or functional proof-of-concept. It includes only boilerplate setup instructions, a generic README, and a license file.

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 (4)

Core 4

Scores

CVSS v3 7.5
EPSS 0.0058
EPSS Percentile 43.7%
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-606 CWE-674
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