# CVE-2023-34833: File upload in n/a

> Attackers can execute arbitrary code by uploading a crafted file to the ThinkAdmin web application's upload API.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Jun 2023
- **Updated:** 27 Nov 2024
- **Also known as:** GHSA-c49c-8c73-4w97

## What is CVE-2023-34833?

CVE-2023-34833 is a medium-severity vulnerability in n/a, published on 15 Jun 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An arbitrary file upload vulnerability in the component /api/upload.php of ThinkAdmin v6 allows attackers to execute arbitrary code via a crafted file.

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

## Which versions are affected by CVE-2023-34833?

It affects 1 product.


Products: Thinkadmin Thinkadmin.

## How do I fix CVE-2023-34833?

No fix has been published for CVE-2023-34833 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-34833 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-34833 exists.

## Other vulnerabilities in n/a

- [CVE-2020-23653](https://insights.sbomify.com/CVE-2020-23653/): ThinkAdmin insecure unserialize vulnerability (critical 9.8)
- [CVE-2019-11018](https://insights.sbomify.com/CVE-2019-11018/): ThinkAdmin Administrator cookies still working after password change (critical 9.8)
- [CVE-2023-48965](https://insights.sbomify.com/CVE-2023-48965/): File upload in n/a (high 8.8)
- [CVE-2023-48966](https://insights.sbomify.com/CVE-2023-48966/): ThinkAdmin arbitrary file upload vulnerability (high 8.8)
- [CVE-2020-35296](https://insights.sbomify.com/CVE-2020-35296/): ThinkAdmin Admin Panel Access using Default Credentials (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34833 and fix it if it is affected.

What it is: CVE-2023-34833 is a medium-severity vulnerability in n/a, published on 15 Jun 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-34833 exists.

Affected product: n/a. 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-2023-34833/ (Markdown: https://insights.sbomify.com/CVE-2023-34833/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34833
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34833
- OSV: https://osv.dev/vulnerability/CVE-2023-34833

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-34833/
Summaries are generated and may contain mistakes; the official description above is the record.