# CVE-2026-90824: GPAC stack-based buffer overflow in DOM event handling

Source: https://junglewise.ai/threats/cve-2026-90824-gpac-stack-based-buffer-overflow-in-dom-event-handling  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-14. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-90824 · Severity: low · CVSS 3.3 · Published 2026-09-14

GPAC is a multimedia framework used for video streaming and multimedia transcoding. A stack-based buffer overflow vulnerability in the MP4Box component's event handling code allows a local attacker to potentially crash the application or execute arbitrary code by supplying a specially crafted input file.

Technologies: [Gpac](https://junglewise.ai/threats/technologies/gpac). Vendors: [Gpac](https://junglewise.ai/threats/vendors/gpac).

## Quick answers

**Is CVE-2026-90824 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-90824 being exploited in the wild.

**How severe is CVE-2026-90824?** Low severity, with a CVSS score of 3.3, published 14 September 2026.

**Which products and versions are affected?** Gpac 26.07.0.

**Is there a fix for CVE-2026-90824?** A patch was published on 2026-07-27: Patch commit 9eb40df4448b88d6a6ce3454657c06f47eff0b24 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-90824 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-90824?** 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

A stack-based buffer overflow exists in the gf_sg_dom_event_bubble function within src/scenegraph/dom_events.c of the MP4Box component in GPAC. The vulnerability is triggered through manipulation of DOM event processing, allowing memory corruption on the stack. The attack vector is local; an attacker must provide a malicious media file that will be processed locally. This could lead to denial of service through a crash or potentially arbitrary code execution. The vulnerability has been patched in version abi-16.23 (commit 9eb40df4448b88d6a6ce3454657c06f47eff0b24).

## Affected products

- GPAC GPAC 26.07.0

## Timeline

- 2026-09-14: disclosed
- 2026-07-27: patched: Patch commit 9eb40df4448b88d6a6ce3454657c06f47eff0b24

## References

- [https://github.com/gpac/gpac/](https://github.com/gpac/gpac/)
- [https://github.com/gpac/gpac/commit/9eb40df4448b88d6a6ce3454657c06f47eff0b24](https://github.com/gpac/gpac/commit/9eb40df4448b88d6a6ce3454657c06f47eff0b24)

## Related threats

- [GPAC type confusion in drawable_get_aspect_2d_mpeg4 and TraverseShape](https://junglewise.ai/threats/cve-2026-124031-gpac-through-26-07-0-contains-a-type-confusion-vulnerability-in)
- [GPAC type confusion in gf_sg_command_apply](https://junglewise.ai/threats/cve-2026-124030-gpac-through-26-07-0-contains-a-type-confusion-vulnerability-in)
- [GPAC out-of-bounds write in AIT parser](https://junglewise.ai/threats/cve-2026-109827-a-vulnerability-has-been-found-in-gpac-up-to-26-07-0-this)
- [GPAC use after free in MP4Box filter queue](https://junglewise.ai/threats/cve-2026-108539-a-vulnerability-was-detected-in-gpac-up-to-26-07-0-this-affects)
- [GPAC buffer overflow in DASH Client URL resolution](https://junglewise.ai/threats/cve-2026-103227-a-weakness-has-been-identified-in-gpac-up-to-26-07-0-affected-by)