Buffer overflow in Gpac
CVE-2026-90791
A vulnerability was detected in GPAC up to f1219cde. This vulnerability affects the function gf_node_unregister of the file scenegraph/base_scenegraph.c of the component MP4Box. The manipulation results in use after free. The attack can be executed remotely. The exploit is now public and may be used. Upgrading to version abi-16.23 is able to resolve this issue. The patch is identified as 9eb40df4448b88d6a6ce3454657c06f47eff0b24. Upgrading the affected component is recommended.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (43.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Gpac — versions f1219cde
Weakness classification (CWE)
References
- vuldb.com/vuln/403297 (technical-description, vdb-entry)
- vuldb.com/vuln/403297/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-90791 (third-party-advisory)
- vuldb.com/submit/914122 (third-party-advisory)
- github.com/gpac/gpac/issues/3801 (issue-tracking)
- github.com/Ech06/CVE_submit/blob/main/gpac_3801.md (exploit)
- github.com/gpac/gpac/commit/9eb40df4448b88d6a6ce3454657c06f47eff0b24 (patch)
- github.com/gpac/gpac/releases/tag/abi-16.23 (patch)
- github.com/gpac/gpac/ (product)
Frequently asked questions
- What is CVE-2026-90791?
- CVE-2026-90791 is a medium-severity vulnerability in Gpac, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.3/10. Published 2026-09-14.
- How severe is CVE-2026-90791?
- Medium severity. CVSS v3 base score is 6.3 out of 10.