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GPAC CVE-2026-91090

| EUVDEUVD-2026-78316 LOW
Stack-based Buffer Overflow (CWE-121)
2026-09-15 VulDB GHSA-q4xw-4662-gq27
Buffer Overflow Stack Overflow Gpac N A
0.9
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
0.9 LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/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
3.9 LOW

Requires local file open by low-privilege user (AV:L, PR:L, UI:R); no scope change; crash/corruption yields low integrity and availability impact with no confidentiality loss.

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

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

4
CVSS changed
Sep 15, 2026 - 08:22 NVD
2.4 (LOW) 0.9 (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 - 07:30 cve.org
LOW 2.4

DescriptionCVE.org

A vulnerability was determined in GPAC up to f1219cde. The affected element is the function gf_node_activate_ex of the file scenegraph/base_scenegraph.c. This manipulation causes stack-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Upgrading to version abi-16.23 is sufficient to fix this issue. Patch name: 9eb40df4448b88d6a6ce3454657c06f47eff0b24. The affected component should be upgraded.

AnalysisAI

Stack exhaustion via unbounded recursion in GPAC's scenegraph node activation routine allows a local attacker to crash the application or corrupt memory when a malicious or malformed multimedia scene file is opened. Affected versions up to commit f1219cde lack a recursion depth guard in gf_node_activate_ex and gf_node_deactivate_ex, enabling crafted cyclic or deeply nested VRML/X3D/XMT scene graphs to exhaust the call stack. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to supply a crafted VRML, XMT, BT, or LASeR scene file, and a local user on the same host must actively open that file using a GPAC application or a software product embedding the GPAC library. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 2.4 (Low) accurately reflects the constrained real-world risk: exploitation requires local access, low privilege, and user interaction (opening a malicious file), with no confidentiality impact and only low integrity and availability consequences. … 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 the fix at commit 9eb40df4448b88d6a6ce3454657c06f47eff0b24 (https://github.com/gpac/gpac/commit/9eb40df4448b88d6a6ce3454657c06f47eff0b24). … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-91090 vulnerability details – vuln.today
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