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GPAC CVE-2026-91091

| EUVDEUVD-2026-78318 LOW
Buffer Overflow (CWE-119)
2026-09-15 VulDB GHSA-q5hg-62rj-mq63
Buffer Overflow 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:N/VI:N/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
4.3 MEDIUM

File-based trigger requires user to process crafted media (UI:R); impact is process crash only (A:L) with no code execution, confidentiality, or integrity impact confirmed.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/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
Severity Changed
Sep 15, 2026 - 08:22 NVD
MEDIUM LOW
CVSS changed
Sep 15, 2026 - 08:22 NVD
5.3 (MEDIUM) 2.1 (LOW)
Source Code Evidence Fetched
Sep 15, 2026 - 08:16 vuln.today
Analysis Generated
Sep 15, 2026 - 08:16 vuln.today
CVE Published
Sep 15, 2026 - 07:45 cve.org
MEDIUM 5.3

DescriptionCVE.org

A vulnerability was identified in GPAC up to f1219cde. The impacted element is the function gf_node_list_insert_child of the file scenegraph/base_scenegraph.c of the component Node Insertion. Such manipulation leads to memory corruption. The attack can be launched remotely. The exploit is publicly available and might be used. Upgrading to version abi-16.23 is sufficient to resolve this issue. The name of the patch is 49dee5cad329cfed310c1682703df7daa47df31a. It is suggested to upgrade the affected component.

AnalysisAI

Memory corruption in GPAC's scenegraph node management routine gf_node_list_insert_child (in scenegraph/base_scenegraph.c) can be triggered by a remote attacker delivering a crafted MPEG-4/BIFS scene file, causing a process crash (DoS). A publicly available proof-of-concept exploit (poc_18_nstatx.zip) is distributed via GitHub, lowering the exploitation bar. …

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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 or processes a crafted media file using a vulnerable GPAC release (up to commit f1219cde). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.3 (Medium) with vector AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N accurately reflects the real-world risk: network-reachable via crafted file delivery, user interaction required (UI:P - the file must be processed), low availability impact only, and no confidentiality or integrity compromise. … 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 GPAC to version abi-16.23 or later, which incorporates patch commit 49dee5cad329cfed310c1682703df7daa47df31a (https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a). … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-91091 vulnerability details – vuln.today
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