# CVE-2026-29058: AVideo: Unauthenticated OS Command Injection via base64Url in objects/getImage.php

> Unauthenticated attackers can execute arbitrary OS commands via the base64Url parameter in AVideo, leading to server compromise and data exfiltration.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Mar 2026
- **Updated:** 9 Mar 2026
- **Also known as:** GHSA-9j26-99jh-v26q

## What is CVE-2026-29058?

CVE-2026-29058 is a critical command injection vulnerability in WWBN AVideo-Encoder, published on 6 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

AVideo is a video-sharing Platform software. Prior to version 7.0, an unauthenticated attacker can execute arbitrary OS commands on the server by injecting shell command substitution into the base64Url GET parameter. This can lead to full server compromise, data exfiltration (e.g., configuration secrets, internal keys, credentials), and service disruption. This issue has been patched in version 7.0.

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

## Which versions are affected by CVE-2026-29058?

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 | 7.0.0 |
| `wwbn/avideo` | Packagist | All versions | 7.0.0 |

Products: Wwbn Avideo-Encoder.

## How do I fix CVE-2026-29058?

Upgrade wwbn/avideo to 7.0.0 or later.

## Is CVE-2026-29058 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29058 exists.

Public exploit code:

- AVideo Encoder getImage.php Unauthenticated Command Injection (metasploit)
- WWBN AVideo Encoder < 7.0 - Unauthenticated OS Command Injection (nuclei): http/cves/2026/CVE-2026-29058.yaml

## Other vulnerabilities in WWBN AVideo-Encoder

- [CVE-2026-33024](https://insights.sbomify.com/CVE-2026-33024/): AVideo-Encoder has Unauthenticated Blind Server-Side Request Forgery via Public Thumbnail Generator (critical 9.3)
- [CVE-2026-33025](https://insights.sbomify.com/CVE-2026-33025/): AVideo-Encoder is Vulnerable to Authenticated SQL Injection via ORDER BY Clause (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-29058 and fix it if it is affected.

What it is: CVE-2026-29058 is a critical command injection vulnerability in WWBN AVideo-Encoder, published on 6 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29058 exists.

Affected packages and fixed versions:
- wwbn/avideo (Packagist): affected all versions; fixed in 7.0.0
- wwbn/avideo (Packagist): affected all versions; fixed in 7.0.0

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-2026-29058/ (Markdown: https://insights.sbomify.com/CVE-2026-29058/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-29058
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-29058
- OSV: https://osv.dev/vulnerability/CVE-2026-29058

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-29058/
Summaries are generated and may contain mistakes; the official description above is the record.