Buffer overflow in Gpac
CVE-2026-91087
A flaw has been found in GPAC up to f1219cde. This vulnerability affects the function gf_mo_get_od_id of the file compositor/media_object.c of the component Compositor. Executing a manipulation can lead to use after free. The attack may be performed from remote. The exploit has been published and may be used. Upgrading to version abi-16.24 is able to resolve this issue. This patch is called e34f4ba349d55cd1849f0bcf4cf46552732e2db7. Upgrading the affected component is advised.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.006 (50.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Gpac — versions f1219cde
Weakness classification (CWE)
References
- vuldb.com/vuln/403649 (technical-description, vdb-entry)
- vuldb.com/vuln/403649/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-91087 (third-party-advisory)
- vuldb.com/submit/919756 (third-party-advisory)
- github.com/gpac/gpac/issues/3807 (issue-tracking)
- github.com/user-attachments/files/30399593/poc_12_info.zip (exploit)
- github.com/gpac/gpac/commit/e34f4ba349d55cd1849f0bcf4cf46552732e2db7 (patch)
- github.com/gpac/gpac/releases/tag/abi-16.24 (patch)
- github.com/gpac/gpac/ (product)
Frequently asked questions
- What is CVE-2026-91087?
- CVE-2026-91087 is a high-severity vulnerability in Gpac, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.3/10. Published 2026-09-15.
- How severe is CVE-2026-91087?
- High severity. CVSS v3 base score is 7.3 out of 10.