Assertion Vulnerability in GPAC MP4Box Affects Local Executions
CVE-2026-90611

4.8MEDIUM

Key Information:

Vendor

GPAC

Status
Gpac
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90611?

A local execution vulnerability has been identified in the GPAC MP4Box, specifically within the xmt_parse_element function of scene_manager/loader_xmt.c. This flaw allows attackers to exploit a reachable assertion when manipulating the input, leading to potential denial of service. The issue has been publicly disclosed, and a patch is available. Users are advised to upgrade to version abi-16.23 to mitigate this risk. Review the related resources for detailed information and guidance.

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-2026-90611 - Proof of Concept

References

https://vuldb.com/vuln/403193
vdb-entrytechnical-description
https://vuldb.com/vuln/403193/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90611
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

r1ck9 (VulDB User)
.