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GPAC CVE-2026-91087

| EUVDEUVD-2026-78302 MEDIUM
Use After Free (CWE-416)
2026-09-15 VulDB GHSA-w6cq-hc26-45wr
Denial Of Service Use After Free Memory Corruption Gpac N A
5.5
CVSS 4.0 · Vendor: VulDB
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Severity by source

Vendor (VulDB) PRIMARY
5.5 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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
8.8 HIGH

UAF in media parser reachable via crafted file; UI:R for typical client use, C/I/A:H reflecting heap corruption potential from confirmed UAF with public POC.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/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
None
Scope
X

Lifecycle Timeline

4
Source Code Evidence Fetched
Sep 15, 2026 - 07:34 vuln.today
Analysis Generated
Sep 15, 2026 - 07:34 vuln.today
CVSS changed
Sep 15, 2026 - 07:22 NVD
6.9 (MEDIUM) 5.5 (MEDIUM)
CVE Published
Sep 15, 2026 - 06:45 cve.org
MEDIUM 5.5

DescriptionCVE.org

A flaw has been found in GPAC up to f1219cde. This vulnerability affects the function gf_mo_get_od_id of the file compositor/media_object.c of the component Compositor. Executing a manipulation can lead to use after free. The attack may be performed from remote. The exploit has been published and may be used. Upgrading to version abi-16.24 is able to resolve this issue. This patch is called e34f4ba349d55cd1849f0bcf4cf46552732e2db7. Upgrading the affected component is advised.

AnalysisAI

Use-after-free in GPAC's LASeR scene graph command processing subsystem allows remote attackers to corrupt heap memory by supplying a crafted media file, potentially leading to process crash or code execution. Affected are GPAC builds up to commit f1219cde; the flaw stems from direct node-pointer assignment without proper reference counting in the LASeR decoder and scene graph command application paths. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Delivery
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Vulnerability AssessmentAI

Exploitation Exploitation requires the target GPAC instance to parse a crafted LASeR/SAF or MPEG-4 scene-graph encoded media input controlled by the attacker. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 4.0 score of 5.5 with all-Low impact metrics (VC:L/VI:L/VA:L) significantly understates realistic risk for a confirmed UAF with a public exploit. … 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 release abi-16.24, available at https://github.com/gpac/gpac/releases/tag/abi-16.24. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-91087 vulnerability details – vuln.today
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