CVE-2026-8124 GPAC box_code_base.c sidx_box_read allocation of resources

Medium 4.8 Published 8 May 2026 Updated 8 May 2026

A local attacker can cause resource exhaustion in GPAC via the sidx_box_read function, leading to denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-8124?

CVE-2026-8124 is a medium-severity denial of service vulnerability in Gpac Gpac, published on 8 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A security vulnerability has been detected in GPAC up to 26.02.0. This affects the function sidx_box_read of the file src/isomedia/box_code_base.c. The manipulation leads to allocation of resources. The attack must be carried out locally. The exploit has been disclosed publicly and may be used. The identifier of the patch is 442e2299530138d8f874fd885c565ba98a6318ba. It is suggested to install a patch to address this issue.

Weakness: CWE-770, CWE-400

Which versions are affected by CVE-2026-8124?

It affects 1 product.

Products include Gpac Gpac.

How do I fix CVE-2026-8124?

No fix has been published for CVE-2026-8124 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-8124 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8124 exists.

All Gpac Gpac vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-8124, GHSA-qvg3-xf4r-fgqm, UBUNTU-CVE-2026-8124.