# CVE-2026-90826: GPAC MP4Box out-of-bounds read in gf_node_del

Source: https://junglewise.ai/threats/cve-2026-90826-gpac-mp4box-out-of-bounds-read-in-gf-node-del  
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-2026-90826 · Severity: low · CVSS 2.8 · Published 2026-09-14

GPAC is an open-source multimedia framework used for video streaming, transcoding, and media processing. MP4Box is its command-line tool for manipulating MP4 files. A local out-of-bounds memory read vulnerability in the node deletion function could allow an attacker who can execute code locally to read sensitive data from memory or crash the application.

Technologies: [Gpac MP4Box](https://junglewise.ai/threats/technologies/mp4box). Vendors: [Gpac](https://junglewise.ai/threats/vendors/gpac).

## Quick answers

**Is CVE-2026-90826 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-90826 being exploited in the wild.

**How severe is CVE-2026-90826?** Low severity, with a CVSS score of 2.8, published 14 September 2026.

**Which products and versions are affected?** Gpac MP4Box 26.07.0.

**Is there a fix for CVE-2026-90826?** A patch was published on 2026-07-27: Patch commit afca1f1181668d85941d51ed1adf647807d5d975 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-90826 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-90826?** Check whether you run Gpac MP4Box 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

An out-of-bounds read vulnerability exists in the gf_node_del function within scenegraph/base_scenegraph.c of GPAC's MP4Box component. The vulnerability is triggered during MP4 file processing and requires local code execution to exploit. An attacker must be able to supply a malformed MP4 file and execute MP4Box locally to trigger the out-of-bounds read, potentially leading to information disclosure or denial of service. The issue has been patched in version abi-16.23 (commit afca1f1181668d85941d51ed1adf647807d5d975).

## Affected products

- GPAC MP4Box 26.07.0

## Timeline

- 2026-09-14: disclosed
- 2026-07-27: patched: Patch commit afca1f1181668d85941d51ed1adf647807d5d975

## References

- [https://github.com/gpac/gpac/](https://github.com/gpac/gpac/)
- [https://github.com/gpac/gpac/commit/afca1f1181668d85941d51ed1adf647807d5d975](https://github.com/gpac/gpac/commit/afca1f1181668d85941d51ed1adf647807d5d975)

## Related threats

- [GPAC MP4Box segmentation fault in dump_isom_saps](https://junglewise.ai/threats/cve-2025-55667-a-segmentation-violation-in-the-dump-isom-saps-function-mp4box)
- [GPAC MP4Box use-after-free in gf_filter_pid_get_packet](https://junglewise.ai/threats/cve-2025-55654-a-use-after-free-in-the-gf-filter-pid-get-packet-function-filter)
- [GPAC MP4Box floating point exception in gf_parse_lfrac](https://junglewise.ai/threats/cve-2025-55653-gpac-mp4box-v2-4-was-discovered-to-contain-a-floating-point)
- [GPAC MP4Box heap buffer overflow in stbl_AddSize](https://junglewise.ai/threats/cve-2025-55640-a-heap-buffer-overflow-in-the-stbl-addsize-function-isomedia-stbl)
- [GPAC MP4Box use-after-free in gf_node_deactivate_ex](https://junglewise.ai/threats/cve-2026-90827-gpac-mp4box-use-after-free-in-gf-node-deactivate-ex)