# CVE-2021-24664: WPSchoolPress < 2.1.17 - Multiple Admin+ Stored Cross-Site Scripting

> An attacker with admin privileges can inject malicious scripts via stored XSS in the WPSchoolPress plugin, potentially compromising user sessions.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 8 Nov 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-v58g-4h5m-gvqg

## What is CVE-2021-24664?

CVE-2021-24664 is a medium-severity cross-site scripting vulnerability in Unknown School Management System – WPSchoolPress, published on 8 Nov 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

The School Management System – WPSchoolPress WordPress plugin before 2.1.17 sanitise some fields using sanitize_text_field() but does not escape them before outputting in attributes, resulting in Stored Cross-Site Scripting issues.

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

## Which versions are affected by CVE-2021-24664?

It affects 1 product.


Products: Igexsolutions Wpschoolpress.

## How do I fix CVE-2021-24664?

No fix has been published for CVE-2021-24664 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24664 being exploited?

There is no known exploitation of CVE-2021-24664 in the wild and no public exploit code.

Public exploit code:

- WordPress Plugin WPSchoolPress 2.1.16 - 'Multiple' Cross Site Scripting (XSS) (exploitdb)

## Other vulnerabilities in Unknown School Management System – WPSchoolPress

- [CVE-2025-1667](https://insights.sbomify.com/CVE-2025-1667/): School Management System – WPSchoolPress <= 2.2.16 - Missing Authorization to Privilege Escalation via Account Takeover (high 8.8)
- [CVE-2024-9637](https://insights.sbomify.com/CVE-2024-9637/): Missing authorization in School Management System – WPSchoolPress (high 8.8)
- [CVE-2023-4776](https://insights.sbomify.com/CVE-2023-4776/): WPSchoolPress < 2.2.5 - Teacher+ SQLi (high 8.8)
- [CVE-2021-24575](https://insights.sbomify.com/CVE-2021-24575/): WPSchoolPress < 2.1.10 - Multiple Authenticated SQL Injections (high 8.8)
- [CVE-2025-1669](https://insights.sbomify.com/CVE-2025-1669/): School Management System – WPSchoolPress <= 2.2.17 - Authenticated (Teacher+) SQL Injection (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24664 and fix it if it is affected.

What it is: CVE-2021-24664 is a medium-severity cross-site scripting vulnerability in Unknown School Management System – WPSchoolPress, published on 8 Nov 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-24664 in the wild and no public exploit code.

Affected product: Unknown School Management System – WPSchoolPress. 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-2021-24664/ (Markdown: https://insights.sbomify.com/CVE-2021-24664/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24664
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24664
- OSV: https://osv.dev/vulnerability/CVE-2021-24664

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-24664/
Summaries are generated and may contain mistakes; the official description above is the record.