# CVE-2019-5127: Command injection in YouPHPTube"

> Unauthenticated attackers can execute arbitrary commands on the server via the base64Url parameter in YouPHPTube Encoder.

- **Severity:** Critical 10.0 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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:** No
- **Published:** 25 Oct 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-354f-hf2x-4xmq

## What is CVE-2019-5127?

CVE-2019-5127 is a critical command injection vulnerability in YouPHPTube", published on 25 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A command injection have been found in YouPHPTube Encoder. A successful attack could allow an attacker to compromise the server. Exploitable unauthenticated command injections exist in YouPHPTube Encoder 2.3 a plugin for providing encoder functionality in YouPHPTube. The parameter base64Url in /objects/getImage.php is vulnerable to a command injection attack.

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

## Which versions are affected by CVE-2019-5127?

It affects 1 product.


Products: Youphptube Youphptube Encoder.

## How do I fix CVE-2019-5127?

No fix has been published for CVE-2019-5127 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-5127 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-5127 exists.

Public exploit code:

- YouPHPTube Encoder 2.3 - Remote Command Injection (nuclei): http/cves/2019/CVE-2019-5127.yaml

## Other vulnerabilities in YouPHPTube"

- [CVE-2019-5128](https://insights.sbomify.com/CVE-2019-5128/): Command injection in YouPHPTube (critical 10.0)
- [CVE-2019-5129](https://insights.sbomify.com/CVE-2019-5129/): Command injection in YouPHPTube (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-5127 and fix it if it is affected.

What it is: CVE-2019-5127 is a critical command injection vulnerability in YouPHPTube", published on 25 Oct 2019. 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-2019-5127 exists.

Affected product: YouPHPTube". 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-2019-5127/ (Markdown: https://insights.sbomify.com/CVE-2019-5127/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-5127
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-5127
- OSV: https://osv.dev/vulnerability/CVE-2019-5127

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-5127/
Summaries are generated and may contain mistakes; the official description above is the record.