Use After Free Vulnerability in GPAC MP4Box Component
CVE-2026-90794

5.3MEDIUM

Key Information:

Vendor

GPAC

Status
Gpac
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90794?

A critical vulnerability has been identified in the GPAC MP4Box component, specifically in the gf_sg_script_load function within the vrml_tools.c file. This issue arises from a use after free condition, allowing attackers to execute remote exploitation. The public disclosure of this exploit increases the urgency for users to upgrade their systems. The recommended version to mitigate this vulnerability is abi-16.23, with the accompanying patch identified as 9eb40df4448b88d6a6ce3454657c06f47eff0b24. It is advisable for users to update to this version promptly to ensure the continued security of their applications.

Affected Version(s)

GPAC f1219cde

GPAC abi-16.23

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-90794 - Proof of Concept

References

https://vuldb.com/vuln/403300
vdb-entrytechnical-description
https://vuldb.com/vuln/403300/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90794
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ech06 (VulDB User)
.