Is CVE-2026-124030 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-124030 being exploited in the wild.

How severe is CVE-2026-124030?

Medium severity, with a CVSS score of 5.5, published 6 November 2026.

Is there a fix for CVE-2026-124030?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-124030 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-124030?

Check whether you run Gpac at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-124030: GPAC type confusion in gf_sg_command_apply

CVE-2026-124030 · Severity: medium · CVSS 5.5 · Published 2026-11-06

GPAC is a multimedia framework used for video streaming and MP4 file processing. A type confusion vulnerability in the BIFS command handler allows an attacker to crash MP4Box or applications using GPAC by supplying a crafted XMT file, potentially during chapter import operations. This could disrupt video processing workflows or be chained with other vulnerabilities for more severe impact.

Technologies: Gpac. Vendors: Gpac.

Quick answers

Is CVE-2026-124030 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-124030 being exploited in the wild.
How severe is CVE-2026-124030?: Medium severity, with a CVSS score of 5.5, published 6 November 2026.
Which products and versions are affected?: Gpac through 26.07.0.
Is there a fix for CVE-2026-124030?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-124030 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-124030?: Check whether you run Gpac at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a type confusion flaw in gf_sg_command_apply() within src/scenegraph/commands.c that fails to validate BIFS field-replace command types match the target node fields. When a malicious XMT file is processed, the type mismatch causes gf_sg_vrml_field_clone() to perform memcpy operations from invalid memory pointers, resulting in a crash (denial of service).

Affected products

GPAC GPAC through 26.07.0

Timeline

2026-11-06: disclosed

References

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