---
id: CVE-2026-110604
title: >-
  Mini-XML 4.0.0 through 4.0.6 contains an off-by-one stack out-of-bounds write
  in mxml_strtod() when the locale decimal point is not '.'
summary: >-
  Mini-XML 4.0.0 through 4.0.6 contains an off-by-one stack out-of-bounds write
  in mxml_strtod() when the locale decimal point is not '.'. Attackers can
  supply XML with a 63-digit REAL value followed by '.' to write a NUL byte past
  the 64-…
severity: low
cvss: 3.6
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L'
cwe:
  - CWE-193
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:18:25.567'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110604'
references:
  - url: 'https://github.com/michaelrsweet/mxml/blob/v4.0.6/mxml-file.c#L1860-L1887'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/michaelrsweet/mxml/commit/367c7ddd3387f65e867d776216de274bcaa3dae1
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@haind-pwn/mxml-strtod-locale-stack-overflow'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/mini-xml-4.0.0-through-4.0.6-stack-out-of-bounds-write-via-mxml-strtod
    label: disclosure@vulncheck.com
  - url: >-
      https://hackmd.io/@haind-pwn/cve-2026-110604-mxml-strtod-locale-stack-overflow
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
ingestedAt: '2026-10-14T15:36:14.003Z'
---

## Overview

Mini-XML 4.0.0 through 4.0.6 contains an off-by-one stack out-of-bounds write in mxml_strtod() when the locale decimal point is not '.'. Attackers can supply XML with a 63-digit REAL value followed by '.' to write a NUL byte past the 64-byte stack buffer, corrupting stack memory or crashing the process.

## Remediation

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