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GPAC MP4Box CVE-2026-90687

| EUVDEUVD-2026-77206 LOW
Use After Free (CWE-416)
2026-09-14 VulDB GHSA-pvm2-5q9c-9rg5
Denial Of Service Use After Free Memory Corruption Gpac N A
2.1
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
7.6 HIGH

File delivered remotely but requires local execution (AV:N/UI:R); UAF reliably crashes process (A:H); limited memory disclosure and corruption possible (C:L/I:L); no privilege required to run MP4Box.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

5
Source Code Evidence Fetched
Sep 14, 2026 - 06:36 vuln.today
Analysis Generated
Sep 14, 2026 - 06:36 vuln.today
Severity Changed
Sep 14, 2026 - 06:22 NVD
MEDIUM LOW
CVSS changed
Sep 14, 2026 - 06:22 NVD
5.3 (MEDIUM) 2.1 (LOW)
CVE Published
Sep 14, 2026 - 05:45 cve.org
LOW 2.1

DescriptionCVE.org

A vulnerability was determined in GPAC up to f1219cde. This vulnerability affects the function gf_node_changed_internal of the file scenegraph/base_scenegraph.c of the component MP4Box. This manipulation causes use after free. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version abi-16.23 is able to resolve this issue. Patch name: 9eb40df4448b88d6a6ce3454657c06f47eff0b24. Upgrading the affected component is recommended.

AnalysisAI

Use-after-free in GPAC's scene graph management allows remote attackers to cause memory corruption via a crafted multimedia scene file. The flaw exists in gf_node_changed_internal within base_scenegraph.c and is triggered when GPAC's BT/XMT scene loaders fail to properly track node lifecycle, leaving dangling references to freed nodes in def_nodes lists and proto field structures. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires that a user or automated process opens a specially crafted multimedia scene file (XMT, BT, or LASeR format) using GPAC's MP4Box tool or any application embedding the GPAC scene graph library. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The vendor-supplied CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:P - score 2.1) rates this as very low severity, which is partially accurate: user interaction (opening a crafted file) is required (UI:P), and the impacts are scored as Low across C/V/A. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade to GPAC release abi-16.23, which incorporates patch commit 9eb40df4448b88d6a6ce3454657c06f47eff0b24 (https://github.com/gpac/gpac/commit/9eb40df4448b88d6a6ce3454657c06f47eff0b24). … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-90687 vulnerability details – vuln.today
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