# CVE-2025-12270: LearnHouse Student Assignment Submission sub_file resource injection

> Remote attackers can manipulate resource identifiers in the assignment submission API to access or modify unauthorized files.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P`)
- **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:** 27 Oct 2025
- **Updated:** 27 Oct 2025
- **Also known as:** GHSA-ghj3-xmp5-m2wv

## What is CVE-2025-12270?

CVE-2025-12270 is a medium-severity path traversal vulnerability in LearnHouse, published on 27 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was determined in LearnHouse up to 98dfad76aad70711a8113f6c1fdabfccf10509ca. The impacted element is an unknown function of the file /api/v1/assignments/{assignment_id}/tasks/{task_id}/sub_file of the component Student Assignment Submission Handler. This manipulation causes improper control of resource identifiers. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key), CWE-99 (Improper Control of Resource Identifiers)

## Which versions are affected by CVE-2025-12270?

It affects 1 product.


Products: Learnhouse Learnhouse.

## How do I fix CVE-2025-12270?

No fix has been published for CVE-2025-12270 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-12270 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-12270 exists.

## Other vulnerabilities in LearnHouse

- [CVE-2025-12268](https://insights.sbomify.com/CVE-2025-12268/): LearnHouse Course Thumbnail courses unrestricted upload (medium 5.3)
- [CVE-2025-12276](https://insights.sbomify.com/CVE-2025-12276/): LearnHouse Image information disclosure (medium 5.3)
- [CVE-2025-12269](https://insights.sbomify.com/CVE-2025-12269/): LearnHouse Account Setting previews cross site scripting (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-12270 and fix it if it is affected.

What it is: CVE-2025-12270 is a medium-severity path traversal vulnerability in LearnHouse, published on 27 Oct 2025. 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-2025-12270 exists.

Affected product: LearnHouse. 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-2025-12270/ (Markdown: https://insights.sbomify.com/CVE-2025-12270/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-12270
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-12270
- OSV: https://osv.dev/vulnerability/CVE-2025-12270

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-12270/
Summaries are generated and may contain mistakes; the official description above is the record.