# CVE-2026-90683

## Summary

- **CVE ID:** CVE-2026-90683
- **Severity:** MEDIUM
- **CVSS Score:** 4.8 (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P)
- **CWE:** CWE-617
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 15, 2026

## Description

A vulnerability was detected in GPAC up to f1219cde. Affected is the function gf_node_unregister of the file scenegraph/base_scenegraph.c of the component MP4Box. Performing a manipulation results in reachable assertion. Attacking locally is a requirement. The exploit is now public and may be used. Upgrading to version abi-16.23 is able to address this issue. The patch is named 49dee5cad329cfed310c1682703df7daa47df31a. It is advisable to upgrade the affected component. This is not a duplicate of CVE-2021-46237 or CVE-2021-46234.

## Affected Products

- n/a — GPAC (f1219cde)
- n/a — GPAC (abi-16.23)

## References

- [CNA](https://vuldb.com/vuln/403216)
- [CNA](https://vuldb.com/vuln/403216/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-90683)
- [CNA](https://vuldb.com/submit/913780)
- [CNA](https://github.com/gpac/gpac/issues/3823)
- [CNA](https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln%20GPAC%20MP4Box%20Assertion%20Failure%20assert(num_instances).md)
- [CNA](https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a)
- [CNA](https://github.com/gpac/gpac/releases/tag/abi-16.23)
- [CNA](https://github.com/gpac/gpac/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.12%
- **EPSS Percentile:** 1.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._