---
id: CVE-2026-108538
title: A security vulnerability has been detected in GPAC up to 26.07.0
summary: >-
  A security vulnerability has been detected in GPAC up to 26.07.0. The impacted
  element is the function gf_mx_v of the file utils/os_thread.c of the component
  MP4Box. Such manipulation leads to use after free. The attack can be launched
  r…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-119
  - CWE-416
product: GPAC
affected:
  - GPAC 26.07
published: '2026-10-11'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T16:17:35.770'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108538'
references:
  - url: 'https://github.com/user-attachments/files/31270809/PoC.zip'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-108538'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/941979'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/416193'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/416193/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.0022
epssPercentile: 0.12418
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-15T14:50:48.675589Z'
ingestedAt: '2026-10-11T05:42:11.233Z'
---

## Overview

A security vulnerability has been detected in GPAC up to 26.07.0. The impacted element is the function gf_mx_v of the file utils/os_thread.c of the component MP4Box. Such manipulation leads to use after free. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

## Remediation

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