# CVE-2026-103227: GPAC buffer overflow in DASH Client URL resolution

Source: https://junglewise.ai/threats/cve-2026-103227-a-weakness-has-been-identified-in-gpac-up-to-26-07-0-affected-by  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-30. Updated: 2026-09-30  
License: CC BY 4.0 with a link back

CVE-2026-103227 · Severity: medium · CVSS 6.3 · Published 2026-09-30

GPAC is a multimedia framework used for video streaming and content packaging. The DASH Client component contains a buffer overflow vulnerability in its URL resolution function that can be triggered remotely when processing specially crafted DASH manifests, potentially allowing an attacker to execute code or crash the application.

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

## Quick answers

**Is CVE-2026-103227 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-103227 being exploited in the wild.

**How severe is CVE-2026-103227?** Medium severity, with a CVSS score of 6.3, published 30 September 2026.

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

**Is there a fix for CVE-2026-103227?** 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-2026-103227 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-103227?** 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 buffer overflow exists in the gf_dash_resolve_url function of src/media_tools/dash_client.c in the DASH Client component. The vulnerability is remotely exploitable without requiring authentication or user interaction beyond processing a malicious DASH manifest. Exploitation could lead to code execution or denial of service; a patch is available in version abi-16.26 (commit 4c8e26f).

## Affected products

- GPAC GPAC up to 26.07.0

## Timeline

- 2026-09-30: disclosed

## References

- [https://github.com/gpac/gpac/](https://github.com/gpac/gpac/)
- [https://github.com/gpac/gpac/commit/4c8e26f278ff63eec57968f7bc696f604bb0cffd](https://github.com/gpac/gpac/commit/4c8e26f278ff63eec57968f7bc696f604bb0cffd)

## 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 out-of-bounds read in RTP depacketizer](https://junglewise.ai/threats/cve-2026-93331-gpac-out-of-bounds-read-in-rtp-depacketizer)