# CVE-2023-47126: Information Disclosure in Install Tool in typo3/cms-install

> An attacker can view the full path of the transient data directory via the install tool login screen in composer-based TYPO3 installations.

- **Severity:** Low 3.7 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 14 Nov 2023
- **Updated:** 29 Aug 2024
- **Also known as:** BIT-typo3-2023-47126, GHSA-p2jh-95jg-2w55

## What is CVE-2023-47126?

CVE-2023-47126 is a low-severity vulnerability in Typo3 Typo3, published on 14 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

TYPO3 is an open source PHP based web content management system released under the GNU GPL. In affected versions the login screen of the standalone install tool discloses the full path of the transient data directory (e.g. /var/www/html/var/transient/). This applies to composer-based scenarios only - “classic” non-composer installations are not affected. This issue has been addressed in version 12.4.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2023-47126?

3 open source packages ship an affected version, including typo3/cms-install and typo3. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `typo3/cms-install` | Packagist | From 12.2.0 | 12.4.8 |
| `typo3/cms-install` | Packagist | From 12.2.0 | 12.4.8 |
| `typo3` | Bitnami | From 12.2.0 | 12.4.8 |

Products: Typo3 Typo3.

## How do I fix CVE-2023-47126?

Upgrade typo3/cms-install to 12.4.8 or later.

## Is CVE-2023-47126 being exploited?

There is no known exploitation of CVE-2023-47126 in the wild and no public exploit code.

## Other vulnerabilities in Typo3 Typo3

- [CVE-2009-0258](https://insights.sbomify.com/CVE-2009-0258/): Indexed Search Engine for TYPO3 Command Execution via Metacharacter Injection (critical 10.0)
- [CVE-2011-3583](https://insights.sbomify.com/CVE-2011-3583/): Typo3 SQL injection due to faulty prepared statements (critical 9.8)
- [CVE-2011-4628](https://insights.sbomify.com/CVE-2011-4628/): Typo3 Authentication Bypass (critical 9.8)
- [CVE-2023-24814](https://insights.sbomify.com/CVE-2023-24814/): Persisted Cross-Site Scripting in Frontend Rendering in typo3 (high 8.8)
- [CVE-2021-41113](https://insights.sbomify.com/CVE-2021-41113/): Cross-Site-Request-Forgery in Backend URI Handling in Typo3 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-47126 and fix it if it is affected.

What it is: CVE-2023-47126 is a low-severity vulnerability in Typo3 Typo3, published on 14 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-47126 in the wild and no public exploit code.

Affected packages and fixed versions:
- typo3/cms-install (Packagist): affected from 12.2.0; fixed in 12.4.8
- typo3/cms-install (Packagist): affected from 12.2.0; fixed in 12.4.8
- typo3 (Bitnami): affected from 12.2.0; fixed in 12.4.8

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-2023-47126/ (Markdown: https://insights.sbomify.com/CVE-2023-47126/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-47126
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-47126
- OSV: https://osv.dev/vulnerability/CVE-2023-47126

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-47126/
Summaries are generated and may contain mistakes; the official description above is the record.