# CVE-2026-119777: Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: stack buffer overflow in h.266/vvc parser


- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 30 Oct 2026
- **Updated:** 11 Nov 2026
- **Also known as:** DEBIAN-CVE-2026-119777, ECHO-e69b-a027-f4de, GHSA-hcw3-4f5p-2hh5, RLSA-2026:98621

## What is CVE-2026-119777?

CVE-2026-119777 is a high-severity vulnerability in Red Hat Enterprise Linux 10, published on 30 Oct 2026. 

### Official description

A flaw was found in GStreamer's gst-plugins-bad H.266/VVC parser. When processing a malformed H.266 media file or stream, an integer overflow while parsing profile, tier, and level fields can lead to a stack-based buffer overflow. An attacker could cause an application to crash and may be able to execute code in the context of the affected application.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-119777?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `gstreamer1-plugins-bad-free` | Rocky Linux:10 | All versions | 0:1.26.7-9.el10_3.1 |
| `gstreamer1-plugins-bad-free-debuginfo` | Rocky Linux:10 | All versions | 0:1.26.7-9.el10_3.1 |
| `gstreamer1-plugins-bad-free-debugsource` | Rocky Linux:10 | All versions | 0:1.26.7-9.el10_3.1 |
| `gstreamer1-plugins-bad-free-devel` | Rocky Linux:10 | All versions | 0:1.26.7-9.el10_3.1 |
| `gstreamer1-plugins-bad-free-libs` | Rocky Linux:10 | All versions | 0:1.26.7-9.el10_3.1 |
| `gstreamer1-plugins-bad-free-libs-debuginfo` | Rocky Linux:10 | All versions | 0:1.26.7-9.el10_3.1 |

## How do I fix CVE-2026-119777?

Upgrade to a fixed version.

## Is CVE-2026-119777 being exploited?

There is no known exploitation of CVE-2026-119777 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-119777 and fix it if it is affected.

What it is: CVE-2026-119777 is a high-severity vulnerability in Red Hat Enterprise Linux 10, published on 30 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-119777 in the wild and no public exploit code.

Affected product: Red Hat Enterprise Linux 10. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-119777/ (Markdown: https://insights.sbomify.com/CVE-2026-119777/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-119777
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-119777
- OSV: https://osv.dev/vulnerability/CVE-2026-119777

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-119777/
Summaries are generated and may contain mistakes; the official description above is the record.