# CVE-2023-43623: Information disclosure in Mendix Forgot Password (Mendix 10 compatible)

> An unauthenticated attacker can enumerate valid users via distinguishable responses, facilitating brute force attacks against the Mendix Forgot Password module.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Oct 2023
- **Updated:** 18 Sep 2024
- **Also known as:** GHSA-7953-vwv9-3rqv

## What is CVE-2023-43623?

CVE-2023-43623 is a medium-severity vulnerability in Siemens Mendix Forgot Password (Mendix 10 compatible), published on 10 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been identified in Mendix Forgot Password (Mendix 10 compatible) (All versions < V5.4.0), Mendix Forgot Password (Mendix 7 compatible) (All versions < V3.7.3), Mendix Forgot Password (Mendix 8 compatible) (All versions < V4.1.3), Mendix Forgot Password (Mendix 9 compatible) (All versions < V5.4.0). Applications using the affected module are vulnerable to user enumeration due to distinguishable responses. This could allow an unauthenticated remote attacker to determine if a user is valid or not, enabling a brute force attack with valid users.

Weakness: CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2023-43623?

It affects 1 product.


Products: Mendix Forgot Password.

## How do I fix CVE-2023-43623?

No fix has been published for CVE-2023-43623 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-43623 being exploited?

There is no known exploitation of CVE-2023-43623 in the wild and no public exploit code.

## Other vulnerabilities in Siemens Mendix Forgot Password (Mendix 10 compatible)

- [CVE-2022-26313](https://insights.sbomify.com/CVE-2022-26313/): Auth bypass in Mendix Forgot Password Appstore module (critical 9.8)
- [CVE-2022-26314](https://insights.sbomify.com/CVE-2022-26314/): Weak cryptography in Mendix Forgot Password Appstore module (critical 9.8)
- [CVE-2021-25672](https://insights.sbomify.com/CVE-2021-25672/): Missing authorization in Mendix Forgot Password Appstore module (high 8.8)
- [CVE-2023-27464](https://insights.sbomify.com/CVE-2023-27464/): Information disclosure in Mendix Forgot Password (Mendix 7 compatible) (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-43623 and fix it if it is affected.

What it is: CVE-2023-43623 is a medium-severity vulnerability in Siemens Mendix Forgot Password (Mendix 10 compatible), published on 10 Oct 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-2023-43623 in the wild and no public exploit code.

Affected product: Siemens Mendix Forgot Password (Mendix 10 compatible). 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-2023-43623/ (Markdown: https://insights.sbomify.com/CVE-2023-43623/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-43623
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-43623
- OSV: https://osv.dev/vulnerability/CVE-2023-43623

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-43623/
Summaries are generated and may contain mistakes; the official description above is the record.