Use after free vulnerability in GPAC MP4Box by GPAC
CVE-2026-90687

5.3MEDIUM

Key Information:

Vendor

GPAC

Status
Gpac
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90687?

A vulnerability has been identified in GPAC's MP4Box component related to the gf_node_changed_internal function found in scenegraph/base_scenegraph.c. This flaw enables a use after free condition, allowing potential attackers to manipulate the application remotely. Affected versions are up to f1219cde. It is advised that users upgrade to version abi-16.23 to mitigate risks associated with this vulnerability, as the exploit has been made publicly available.

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-2026-90687 - Proof of Concept

References

https://vuldb.com/vuln/403220
vdb-entrytechnical-description
https://vuldb.com/vuln/403220/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90687
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)
.