# CVE-2021-32630: Various

> Authenticated attackers can upload malicious .phar files to execute arbitrary code via the document upload feature in Admidio.

- **Severity:** Critical 9.6 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N`)
- **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:** 20 May 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-xpqj-67r8-25j2

## What is CVE-2021-32630?

CVE-2021-32630 is a critical vulnerability in admidio, published on 20 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Admidio is a free, open source user management system for websites of organizations and groups. In Admidio before version 4.0.4, there is an authenticated RCE via .phar file upload. A php web shell can be uploaded via the Documents & Files upload feature. Someone with upload permissions could rename the php shell with a .phar extension, visit the file, triggering the payload for a reverse/bind shell. This can be mitigated by excluding a .phar file extension to be uploaded (like you did with .php .phtml .php5 etc). The vulnerability is patched in version 4.0.4.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2021-32630?

It affects 1 product.


Products: Admidio Admidio.

## How do I fix CVE-2021-32630?

No fix has been published for CVE-2021-32630 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-32630 being exploited?

There is no known exploitation of CVE-2021-32630 in the wild and no public exploit code.

## Other vulnerabilities in admidio

- [CVE-2024-37906](https://insights.sbomify.com/CVE-2024-37906/): Admidio has Blind SQL Injection in ecard_send.php (critical 10.0)
- [CVE-2026-32817](https://insights.sbomify.com/CVE-2026-32817/): Admidio is Missing Authorization and CSRF Protection on Document and Folder Deletion (critical 9.1)
- [CVE-2024-38529](https://insights.sbomify.com/CVE-2024-38529/): Admidio Vulnerable to RCE via Arbitrary File Upload in Message Attachment (critical 9.1)
- [CVE-2026-32756](https://insights.sbomify.com/CVE-2026-32756/): Admidio: Unrestricted File Upload via CSRF Token Validation Bypass in Documents & Files Module (high 8.8)
- [CVE-2021-43810](https://insights.sbomify.com/CVE-2021-43810/): Cross-site Scripting (XSS) when redirect an url (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-32630 and fix it if it is affected.

What it is: CVE-2021-32630 is a critical vulnerability in admidio, published on 20 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-32630 in the wild and no public exploit code.

Affected product: admidio. 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-2021-32630/ (Markdown: https://insights.sbomify.com/CVE-2021-32630/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-32630
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-32630
- OSV: https://osv.dev/vulnerability/CVE-2021-32630

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-32630/
Summaries are generated and may contain mistakes; the official description above is the record.