# CVE-2026-86720: WWBN AVideo Missing Authorization via resendRestreamer.json.php

> Authenticated users can hijack other users' live streams by accessing unauthorized restream destinations, allowing attackers to broadcast to victim-configured platforms.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Sep 2026
- **Updated:** 8 Sep 2026
- **Also known as:** GHSA-7c8r-rj82-c8fv, GHSA-vpcx-h53g-hfx5

## What is CVE-2026-86720?

CVE-2026-86720 is a high-severity missing authorization vulnerability in WWBN AVideo, published on 8 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate ownership of live_restreams_id in resendRestreamer.json.php, allowing authenticated users with canStream to access other users' restream destinations. Attackers can broadcast their live stream to victim-configured restream destinations by supplying arbitrary live_restreams_id values, hijacking YouTube, Facebook, or Twitch streams using victim stream keys.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-86720?


## How do I fix CVE-2026-86720?

No fix has been published for CVE-2026-86720 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-86720 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86720 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-86720 and fix it if it is affected.

What it is: CVE-2026-86720 is a high-severity missing authorization vulnerability in WWBN AVideo, published on 8 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86720 exists.

Affected product: WWBN AVideo. 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-2026-86720/ (Markdown: https://insights.sbomify.com/CVE-2026-86720/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-86720
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-86720
- OSV: https://osv.dev/vulnerability/CVE-2026-86720

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-86720/
Summaries are generated and may contain mistakes; the official description above is the record.