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GPAC CVE-2026-92475

| EUVDEUVD-2026-81087 LOW
Out-of-bounds Read (CWE-125)
2026-09-16 VulDB GHSA-7f3h-2fw4-5hj2
Buffer Overflow Information Disclosure Gpac
1.9
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
1.9 MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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
5.4 MEDIUM

Content-Range is a remote server response header parsed during a user-initiated download, so AV:N/UI:R/PR:N; OOB read yields only low confidentiality and possible crash (A:L), no integrity impact.

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

Lifecycle Timeline

4
Analysis Generated
Sep 16, 2026 - 20:49 vuln.today
Severity Changed
Sep 16, 2026 - 20:23 NVD
MEDIUM LOW
CVSS changed
Sep 16, 2026 - 20:23 NVD
4.8 (MEDIUM) 1.9 (LOW)
CVE Published
Sep 16, 2026 - 19:45 cve.org
LOW 1.9

DescriptionCVE.org

A weakness has been identified in GPAC 26.08-DEV. This impacts the function wait_for_header_and_parse of the file src/utils/downloader.c. This manipulation of the argument Content-Range causes out-of-bounds read. The attack requires local access. The exploit has been made available to the public and could be used for attacks. Upgrading to version abi-16.26 will fix this issue. Patch name: c74a3065038ede35c1c7b75fa493a69ef6bcdb84. It is recommended to upgrade the affected component.

AnalysisAI

An out-of-bounds read in GPAC 26.08-DEV (the wait_for_header_and_parse routine in src/utils/downloader.c) can disclose memory contents or crash the process when the downloader parses a crafted or empty Content-Range value in an HTTP response header. The victim must actively initiate a download from a malicious or man-in-the-middle server for the malformed header to reach the parser; the vulnerable code path is in GPAC's generic HTTP/fetch machinery rather than a media-decoding path, and the consequence is limited to information disclosure or a crash - no write primitive or code execution is demonstrated. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires GPAC to process an attacker-influenced Content-Range HTTP header via its downloader (wait_for_header_and_parse in src/utils/downloader.c) - i.e., the victim initiates an HTTP download from a malicious or man-in-the-middle server that returns a crafted/empty Content-Range value. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a genuinely low-priority issue despite public exploit availability. … 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 Vendor-released patch: upgrade to GPAC abi-16.26 (the tag containing commit c74a3065038ede35c1c7b75fa493a69ef6bcdb84), which adds the missing non-NULL and non-terminator guards to the header-parsing loop in src/utils/downloader.c and to the equivalent loops in the same release (see https://github.com/gpac/gpac/releases/tag/abi-16.26 and the commit diff at https://github.com/gpac/gpac/commit/c74a3065038ede35c1c7b75fa493a69ef6bcdb84); rebuild or replace bundled GPAC libraries rather than only updating the CLI wrapper. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-92475 vulnerability details – vuln.today
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