---
id: CVE-2026-91088
title: A vulnerability has been found in GPAC up to f1219cde
summary: >-
  A vulnerability has been found in GPAC up to f1219cde. This issue affects the
  function gf_url_concatenate_ex of the file utils/url.c of the component URL
  Handler. The manipulation leads to heap-based buffer overflow. An attack has
  to be …
severity: medium
cvss: 4.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L'
cwe:
  - CWE-119
  - CWE-122
product: GPAC
affected:
  - GPAC f1219cde
published: '2026-09-15'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T15:17:31.613'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91088'
references:
  - url: 'https://github.com/gpac/gpac/'
    label: cna@vuldb.com
  - url: >-
      https://github.com/gpac/gpac/commit/afca1f1181668d85941d51ed1adf647807d5d975
    label: cna@vuldb.com
  - url: 'https://github.com/gpac/gpac/issues/3808'
    label: cna@vuldb.com
  - url: 'https://github.com/gpac/gpac/releases/tag/abi-16.23'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-91088'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/919757'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403650'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403650/cti'
    label: cna@vuldb.com
  - url: 'https://github.com/gpac/gpac/issues/3808'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T14:46:42.546684Z'
epss: 0.00116
epssPercentile: 0.0185
ingestedAt: '2026-09-15T07:33:29.278Z'
---

## Overview

A vulnerability has been found in GPAC up to f1219cde. This issue affects the function gf_url_concatenate_ex of the file utils/url.c of the component URL Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. Upgrading to version abi-16.23 is capable of addressing this issue. The identifier of the patch is afca1f1181668d85941d51ed1adf647807d5d975. It is advisable to upgrade the affected component.

## Remediation

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