---
title: "CVE-2026-33478: AVideo Multi-Chain Attack: Unauthenticated Remote Code Execution via Clone Key Disclosure, Database Dump, and Command Injection"
url: https://erroneo.us/security/cve/CVE-2026-33478/
description: "CVE-2026-33478 (wwbn/avideo (Composer (PHP))): WWBN AVideo is an open source video platform. In versions up to and including 26.0, multiple vulnerabilities…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-03-23
date_modified: 2026-04-08
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-33478"
kev: false
cvss: 10
epss: 0.11235
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-33478: AVideo Multi-Chain Attack: Unauthenticated Remote Code Execution via Clone Key Disclosure, Database Dump, and Command Injection

**Signal:** High exploit likelihood. EPSS ranks it in the top 5% of all CVEs for likely exploitation in the next 30 days. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 11.2% , percentile 96: FIRST’s model estimates a 11.2% chance of exploitation activity in the next 30 days, higher than 96% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes wwbn/avideo (Composer (PHP)) <= 26.0, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

WWBN AVideo is an open source video platform. In versions up to and including 26.0, multiple vulnerabilities in AVideo's CloneSite plugin chain together to allow a completely unauthenticated attacker to achieve remote code execution. The clones.json.php endpoint exposes clone secret keys without authentication, which can be used to trigger a full database dump via cloneServer.json.php. The dump contains admin password hashes stored as MD5, which are trivially crackable. With admin access, the attacker exploits an OS command injection in the rsync command construction in cloneClient.json.php to execute arbitrary system commands. Commit c85d076375fab095a14170df7ddb27058134d38c contains a patch.

## Affected packages

- Composer (PHP) `wwbn/avideo` <= 26.0 → fixed: none listed

## Affected products (CVE record)

- WWBN AVideo: <= 26.0

## Severity

- GitHub_M CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 10.0 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 11.24% probability of exploitation activity in the next 30 days; percentile 96.

## Sources

- [GitHub Advisory GHSA-687q-32c6-8x68](https://github.com/advisories/GHSA-687q-32c6-8x68)
- [CVE.org record CVE-2026-33478](https://www.cve.org/CVERecord?id=CVE-2026-33478)
- [NVD entry CVE-2026-33478](https://nvd.nist.gov/vuln/detail/CVE-2026-33478)
- [github.com](https://github.com/WWBN/AVideo/security/advisories/GHSA-687q-32c6-8x68)
- [github.com](https://github.com/WWBN/AVideo/commit/c85d076375fab095a14170df7ddb27058134d38c)

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Source page: https://erroneo.us/security/cve/CVE-2026-33478/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt