---
id: CVE-2026-92399
title: A vulnerability was determined in GPAC 26.07.0
summary: >-
  A vulnerability was determined in GPAC 26.07.0. This affects the function
  rmt_client_handle_ws_frame of the file src/utils/rmt_ws.c of the component
  WebSocket Handler. Executing a manipulation of the argument payload_size can
  lead to hea…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-119
  - CWE-122
product: GPAC
affected:
  - GPAC 26.07.0
published: '2026-09-16'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T18:18:08.480'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92399'
references:
  - url: 'https://github.com/gpac/gpac/'
    label: cna@vuldb.com
  - url: >-
      https://github.com/gpac/gpac/commit/37bccbb30cf53a0e1a084cea9a1ce422b3ddfe12
    label: cna@vuldb.com
  - url: 'https://github.com/gpac/gpac/issues/3860'
    label: cna@vuldb.com
  - url: 'https://github.com/gpac/gpac/releases/tag/abi-16.26'
    label: cna@vuldb.com
  - url: >-
      https://github.com/user-attachments/files/31208030/poc_rmt_ws_malicious_frame.py
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-92399'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/940250'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/405551'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/405551/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-18T18:09:21.757158Z'
epss: 0.00661
epssPercentile: 0.49827
ingestedAt: '2026-09-16T16:59:56.611Z'
---

## Overview

A vulnerability was determined in GPAC 26.07.0. This affects the function rmt_client_handle_ws_frame of the file src/utils/rmt_ws.c of the component WebSocket Handler. Executing a manipulation of the argument payload_size can lead to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version abi-16.26 is able to mitigate this issue. This patch is called 37bccbb30cf53a0e1a084cea9a1ce422b3ddfe12. Upgrading the affected component is recommended.

## Remediation

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