# CVE-2024-28096: Stored Cross-site Scripting in Class functionality in Schoolbox

> Authenticated attackers can inject malicious scripts into Class functionality, allowing them to perform actions on behalf of other users.

- **Severity:** High 7.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 7 Mar 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-34xv-8mr4-fx45

## What is CVE-2024-28096?

CVE-2024-28096 is a high-severity cross-site scripting vulnerability in Schoolbox, published on 7 Mar 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Class functionality in Schoolbox application 
before version 23.1.3 is vulnerable to stored cross-site scripting 
allowing authenticated attacker to perform security actions in the 
context of the affected users.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2024-28096?

It affects 1 product.


Products: Schoolbox Schoolbox.

## How do I fix CVE-2024-28096?

No fix has been published for CVE-2024-28096 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-28096 being exploited?

There is no known exploitation of CVE-2024-28096 in the wild and no public exploit code.

## Other vulnerabilities in Schoolbox

- [CVE-2024-28094](https://insights.sbomify.com/CVE-2024-28094/): Blind SQL Injection in Chat functionality in Schoolbox (high 8.8)
- [CVE-2022-3059](https://insights.sbomify.com/CVE-2022-3059/): SQL injection in Schoolbox version 21.0.2, by Schoolbox Pty Ltd (high 8.6)
- [CVE-2022-39020](https://insights.sbomify.com/CVE-2022-39020/): Cross-site scripting in Schoolbox version 21.0.2, by Schoolbox Pty Ltd (high 7.6)
- [CVE-2024-28095](https://insights.sbomify.com/CVE-2024-28095/): Stored Cross-site Scripting in News functionality in Schoolbox (high 7.3)
- [CVE-2024-28097](https://insights.sbomify.com/CVE-2024-28097/): Stored Cross-site Scripting in Calendar functionality in Schoolbox (high 7.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-28096 and fix it if it is affected.

What it is: CVE-2024-28096 is a high-severity cross-site scripting vulnerability in Schoolbox, published on 7 Mar 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-28096 in the wild and no public exploit code.

Affected product: Schoolbox. 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-2024-28096/ (Markdown: https://insights.sbomify.com/CVE-2024-28096/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-28096
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-28096
- OSV: https://osv.dev/vulnerability/CVE-2024-28096

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-28096/
Summaries are generated and may contain mistakes; the official description above is the record.