# CVE-2026-45578: WWBN AVideo Live: OS command injection in on_publish.php execAsync via unescaped m3u8 URL

> An attacker can execute arbitrary OS commands via unescaped m3u8 URLs in the live publishing plugin of the AVideo platform.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 29 May 2026
- **Updated:** 29 May 2026
- **Also known as:** GHSA-xw67-cg5f-4m2r

## What is CVE-2026-45578?

CVE-2026-45578 is a high-severity command injection vulnerability in Wwbn Avideo, published on 29 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

WWBN AVideo is an open source video platform. In 29.0 and earlier, there is a classic shell-metacharacter injection. The YPTSocket notification branch in plugin/Live/on_publish.php builds an execAsync() command line by string concatenation, single-quoting each argument but never calling escapeshellarg(). A ' in any of the three interpolated values ($users_id, $m3u8, $obj->liveTransmitionHistory_id) closes the quoted token and lets the attacker append arbitrary commands.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-45578?

2 open source packages ship an affected version, including WWBN/AVideo. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `WWBN/AVideo` | Packagist | All versions to 29.0 | None |
| `WWBN/AVideo` | Packagist | All versions to 29.0 | None |

Products: Wwbn Avideo.

## How do I fix CVE-2026-45578?

No fix has been published for CVE-2026-45578 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-45578 being exploited?

There is no known exploitation of CVE-2026-45578 in the wild and no public exploit code.

## Other vulnerabilities in Wwbn Avideo

- [CVE-2026-40911](https://insights.sbomify.com/CVE-2026-40911/): WWBN AVideo YPTSocket WebSocket Broadcast Relay Leads to Unauthenticated Cross-User JavaScript Execution via Client-Side eval() Sinks (critical 10.0)
- [CVE-2026-33478](https://insights.sbomify.com/CVE-2026-33478/): AVideo Multi-Chain Attack: Unauthenticated Remote Code Execution via Clone Key Disclosure, Database Dump, and Command Injection (critical 10.0)
- [CVE-2022-30534](https://insights.sbomify.com/CVE-2022-30534/): Command injection in AVideo (critical 9.9)
- [CVE-2022-30547](https://insights.sbomify.com/CVE-2022-30547/): Path traversal in AVideo (critical 9.9)
- [CVE-2022-32572](https://insights.sbomify.com/CVE-2022-32572/): Command injection in AVideo (critical 9.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-45578 and fix it if it is affected.

What it is: CVE-2026-45578 is a high-severity command injection vulnerability in Wwbn Avideo, published on 29 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-45578 in the wild and no public exploit code.

Affected packages and fixed versions:
- WWBN/AVideo (Packagist): affected all versions up to 29.0; no fix listed
- WWBN/AVideo (Packagist): affected all versions up to 29.0; no fix listed

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-2026-45578/ (Markdown: https://insights.sbomify.com/CVE-2026-45578/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-45578
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-45578
- OSV: https://osv.dev/vulnerability/CVE-2026-45578

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-45578/
Summaries are generated and may contain mistakes; the official description above is the record.