# CVE-2026-91089: GPAC use after free in gf_node_get_name_and_id

Source: https://junglewise.ai/threats/cve-2026-91089-gpac-use-after-free-in-gf-node-get-name-and-id  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-91089 · Severity: medium · CVSS 6.3 · Published 2026-09-15

GPAC is an open-source multimedia framework used for video streaming and content transcoding. A use-after-free vulnerability in its scene graph parser could allow a remote attacker to crash the application or potentially execute arbitrary code by crafting a malicious multimedia file.

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

## Quick answers

**Is CVE-2026-91089 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91089 being exploited in the wild.

**How severe is CVE-2026-91089?** Medium severity, with a CVSS score of 6.3, published 15 September 2026.

**Which products and versions are affected?** Gpac up to f1219cde.

**Is there a fix for CVE-2026-91089?** A patch was published on 2026-07-28: Patch commit 49dee5cad329cfed310c1682703df7daa47df31a; fixed in version abi-16.23 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-91089 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-91089?** 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 use-after-free flaw in the gf_node_get_name_and_id function in scenegraph/base_scenegraph.c. The root cause involves improper memory management where a previously freed memory region is accessed. The attack vector is remote and does not require authentication; an attacker can trigger the vulnerability by providing a specially crafted multimedia file to an application using the affected GPAC library. Exploitation could result in denial of service (crash) or potentially arbitrary code execution. The issue has been patched; upgrading to version abi-16.23 or applying commit 49dee5cad329cfed310c1682703df7daa47df31a is recommended.

## Affected products

- GPAC GPAC up to f1219cde

## Timeline

- 2026-09-15: disclosed
- 2026-07-28: patched: Patch commit 49dee5cad329cfed310c1682703df7daa47df31a; fixed in version abi-16.23

## References

- [https://github.com/gpac/gpac/](https://github.com/gpac/gpac/)
- [https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a](https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a)

## 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)