# CVE-2026-119728: GStreamer gst-plugins-bad NULL pointer dereference in H.264 MVC parser

Source: https://junglewise.ai/threats/cve-2026-119728-a-flaw-was-found-in-the-h-264-video-parser-in-gst-plugins-bad  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-30. Updated: 2026-10-30  
License: CC BY 4.0 with a link back

CVE-2026-119728 · Severity: medium · CVSS 5.5 · Published 2026-10-30

GStreamer's H.264 video parser contains a flaw that crashes applications when processing specially crafted video files with malformed Multiview stereo data. An attacker can exploit this by distributing a malicious video file that causes the application to crash, resulting in denial of service for users who play the file.

Technologies: [Gstreamer Gst-Plugins-Bad](https://junglewise.ai/threats/technologies/gst-plugins-bad). Vendors: [Gstreamer](https://junglewise.ai/threats/vendors/gstreamer).

## Quick answers

**Is CVE-2026-119728 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-119728 being exploited in the wild.

**How severe is CVE-2026-119728?** Medium severity, with a CVSS score of 5.5, published 30 October 2026.

**Which products and versions are affected?** Gstreamer Gst-Plugins-Bad before 1.28.2.

**Is there a fix for CVE-2026-119728?** Yes: fixed in gst-plugins-bad 1.28.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-119728 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-119728?** Check whether you run Gstreamer Gst-Plugins-Bad 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.

## How to fix

- Fixed in gst-plugins-bad 1.28.2

## Technical details

A NULL pointer dereference (CWE-476) occurs in the H.264 MVC (Multiview Coding) Sequence Parameter Set parser during cleanup of partially allocated structures after a parse failure. The vulnerability is triggered only when processing H.264 content with MULTIVIEW_HIGH or STEREO_HIGH profile Subset SPS NAL units; standard AVC streams are unaffected. Attack requires user interaction to process malicious video content via a local file.

## Affected products

- GStreamer gst-plugins-bad before 1.28.2

## Timeline

- 2026-10-30: disclosed

## References

- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)
- [https://access.redhat.com/security/cve/CVE-2026-119728](https://access.redhat.com/security/cve/CVE-2026-119728)

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- [GStreamer gst-plugins-bad JPEG 2000 decimator integer overflow and division by zero](https://junglewise.ai/threats/cve-2026-121259-a-flaw-was-found-in-the-gstreamer-jpeg-2000-decimator-in-gst)