Memory Corruption Vulnerability in GPAC's MP4Box Component
CVE-2026-90578

4.8MEDIUM

Key Information:

Vendor

GPAC

Status
Gpac
Vendor
CVE Published:
13 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90578?

A vulnerability has been identified in the GPAC MP4Box component, specifically in the gf_list_count function within the utils/list.c file. This flaw allows for a use after free condition, which can potentially be exploited through local execution. The exploit has already been made public and can be used by malicious actors. To mitigate this risk, users are advised to upgrade to version abi-16.23, which includes a patch that addresses this issue. The detailing of the patch can be found in the commit under hash 49dee5cad329cfed310c1682703df7daa47df31a.

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-2026-90578 - Proof of Concept

References

https://vuldb.com/vuln/403163
vdb-entrytechnical-description
https://vuldb.com/vuln/403163/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90578
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
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

r1ck9 (VulDB User)
.