---
id: CVE-2026-88350
title: >-
  An integer overflow vulnerability exists in MPack 1.1.1 in
  mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().
summary: >-
  An integer overflow vulnerability exists in MPack 1.1.1 in
  mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().
severity: none
published: '2026-09-22'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:19:05.340'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88350'
references:
  - url: >-
      https://github.com/ludocode/mpack/commit/3d54d1215bdb5478d3ddecaf85884c58b382cd9b
    label: cve@mitre.org
  - url: 'https://github.com/ludocode/mpack/issues/124'
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
epss: 0.00155
epssPercentile: 0.0397
ingestedAt: '2026-09-22T20:10:15.096Z'
---

## Overview

An integer overflow vulnerability exists in MPack 1.1.1 in mpack_node_cstr_alloc() and mpack_node_utf8_cstr_alloc().

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.