# CVE-2026-105089: WWBN AVideo through 29.2.0 Stored XSS via trailer1 in YouPHPFlix2 Templates

> Attackers with upload permissions can inject malicious scripts via video trailer URLs, leading to JavaScript execution in victims' browsers.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 4 Oct 2026
- **Updated:** 6 Oct 2026
- **Also known as:** GHSA-6wfr-c7fw-4xvw, GHSA-m6h8-gp7c-3qmv

## What is CVE-2026-105089?

CVE-2026-105089 is a critical cross-site scripting vulnerability in WWBN AVideo, published on 4 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

WWBN AVideo through 29.2.0 contains a stored cross-site scripting vulnerability that allows users with upload permission to inject script by setting a malicious video trailer1 URL. The value is rendered unescaped in YouPHPFlix2 templates and channel playlists, letting attackers break out of onclick strings or iframe src attributes to execute JavaScript in victims' browsers.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-105089?


## How do I fix CVE-2026-105089?

No fix has been published for CVE-2026-105089 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-105089 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105089 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-105089 and fix it if it is affected.

What it is: CVE-2026-105089 is a critical cross-site scripting vulnerability in WWBN AVideo, published on 4 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105089 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-2026-105089/ (Markdown: https://insights.sbomify.com/CVE-2026-105089/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-105089
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105089
- OSV: https://osv.dev/vulnerability/CVE-2026-105089

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-105089/
Summaries are generated and may contain mistakes; the official description above is the record.