# CVE-2022-3774: SourceCodester Train Scheduler App resource injection

> Attackers can manipulate resource identifiers in the Train Scheduler App to perform unauthorized actions, requiring vendor attention.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L`)
- **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:** 31 Oct 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-phm7-hv7v-cqqr

## What is CVE-2022-3774?

CVE-2022-3774 is a medium-severity vulnerability in SourceCodester Train Scheduler App, published on 31 Oct 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was found in SourceCodester Train Scheduler App 1.0 and classified as critical. Affected by this issue is some unknown functionality of the file /train_scheduler_app/?action=delete. The manipulation of the argument id leads to improper control of resource identifiers. The attack may be launched remotely. The identifier of this vulnerability is VDB-212504.

Weakness: CWE-99 (Improper Control of Resource Identifiers)

## Which versions are affected by CVE-2022-3774?

It affects 1 product.


Products: Train Scheduler App Project Train Scheduler App.

## How do I fix CVE-2022-3774?

No fix has been published for CVE-2022-3774 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-3774 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-3774 exists.

## Other vulnerabilities in SourceCodester Train Scheduler App

- [CVE-2022-43079](https://insights.sbomify.com/CVE-2022-43079/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2022-42992](https://insights.sbomify.com/CVE-2022-42992/): Cross-site scripting in n/a (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-3774 and fix it if it is affected.

What it is: CVE-2022-3774 is a medium-severity vulnerability in SourceCodester Train Scheduler App, published on 31 Oct 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-3774 exists.

Affected product: SourceCodester Train Scheduler App. 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-2022-3774/ (Markdown: https://insights.sbomify.com/CVE-2022-3774/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-3774
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-3774
- OSV: https://osv.dev/vulnerability/CVE-2022-3774

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-3774/
Summaries are generated and may contain mistakes; the official description above is the record.