Stack-based Buffer Overflow in GPAC MP4Box by GPAC
CVE-2026-90824

4.8MEDIUM

Key Information:

Vendor

GPAC

Status
Gpac
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90824?

A vulnerability exists in GPAC 26.07.0 affecting the function gf_sg_dom_event_bubble within the MP4Box component. This issue can lead to a stack-based buffer overflow, which could potentially be exploited from a local environment. The vulnerability has been made publicly known, and it is strongly advised to upgrade to version abi-16.23 to resolve this issue. The associated patch identifier is 9eb40df4448b88d6a6ce3454657c06f47eff0b24.

Affected Version(s)

GPAC 26.07.0

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-2026-90824 - Proof of Concept

References

https://vuldb.com/vuln/403326
vdb-entrytechnical-description
https://vuldb.com/vuln/403326/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90824
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

fczhang (VulDB User)
.