Is CVE-2026-91086 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-91086 being exploited in the wild.

How severe is CVE-2026-91086?

Medium severity, with a CVSS score of 6.3, published 15 September 2026.

Which products and versions are affected?

GPAC Project GPAC up to f1219cde.

Is there a fix for CVE-2026-91086?

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-2026-91086 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-91086?

Check whether anything you run is named in the advisory. 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.

CVE-2026-91086: GPAC heap-based buffer overflow in MPEG Video Reframer

CVE-2026-91086 · Severity: medium · CVSS 6.3 · Published 2026-09-15

GPAC is a popular open-source multimedia framework used for video streaming, transcoding, and packaging. A heap-based buffer overflow vulnerability exists in its MPEG video reframing component, which could allow remote attackers to crash the application or potentially execute arbitrary code by sending a specially crafted video file.

Quick answers

Is CVE-2026-91086 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-91086 being exploited in the wild.
How severe is CVE-2026-91086?: Medium severity, with a CVSS score of 6.3, published 15 September 2026.
Which products and versions are affected?: GPAC Project GPAC up to f1219cde.
Is there a fix for CVE-2026-91086?: 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-2026-91086 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-91086?: Check whether anything you run is named in the advisory. 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 heap-based buffer overflow in the mpgviddmx_process function of filters/reframe_mpgvid.c in the MPEG Video Reframer component. The attack is network-accessible and requires no authentication or user interaction beyond processing a malicious MPEG video file. An attacker can trigger memory corruption by providing a crafted MPEG video stream, potentially leading to denial of service or code execution. The issue has been patched in version abi-16.23 via commit afca1f1181668d85941d51ed1adf647807d5d975, and upgrading is recommended.

Affected products

GPAC Project GPAC up to f1219cde

Timeline

2026-09-15: disclosed
2026-07-27: patched: Patch commit afca1f1181668d85941d51ed1adf647807d5d975

References

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