# CVE-2026-119729: GStreamer integer overflow in AV1 LEB128 parser

Source: https://junglewise.ai/threats/cve-2026-119729-a-flaw-was-found-in-gstreamer-an-integer-overflow-vulnerability  
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-2026-119729 · Severity: medium · CVSS 6.5 · Published 2026-10-30

GStreamer is a multimedia framework used to process video and audio files in many applications. An integer overflow vulnerability in its AV1 video codec parser allows an attacker to crash applications by sending a specially crafted video file, preventing legitimate use of the application until it is restarted.

Technologies: [Gstreamer](https://junglewise.ai/threats/technologies/gstreamer). Vendors: [Gstreamer](https://junglewise.ai/threats/vendors/gstreamer).

## Quick answers

**Is CVE-2026-119729 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-119729 being exploited in the wild.

**How severe is CVE-2026-119729?** Medium severity, with a CVSS score of 6.5, published 30 October 2026.

**Which products and versions are affected?** Gstreamer 1.18.0 through 1.28.1.

**Is there a fix for CVE-2026-119729?** Yes: fixed in 1.28.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-119729 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-119729?** Check whether you run Gstreamer 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 1.28.2

## Technical details

An integer overflow in the AV1 LEB128 variable-length integer parser (introduced in GStreamer 1.18) allows remote denial of service when processing malformed AV1 bitstreams. The vulnerability requires user interaction (opening/playing a file) and network-reachable attack vector, resulting in application crash with no data exposure or integrity impact.

## Affected products

- GStreamer GStreamer 1.18.0 through 1.28.1

## 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-2026-119729](https://access.redhat.com/security/cve/CVE-2026-119729)

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