# CVE-2021-24561: WP SMS < 5.4.13 - Authenticated Stored Cross-Site Scripting

> Authenticated attackers can inject malicious scripts via the group name parameter in WP SMS, potentially compromising user sessions.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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:** 23 Aug 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-3hc7-7vjp-8x77

## What is CVE-2021-24561?

CVE-2021-24561 is a medium-severity cross-site scripting vulnerability in Unknown WP SMS, published on 23 Aug 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The WP SMS WordPress plugin before 5.4.13 does not sanitise the "wp_group_name" parameter before outputting it back in the "Groups" page, leading to an Authenticated Stored Cross-Site Scripting issue

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

## Which versions are affected by CVE-2021-24561?

It affects 1 product.


Products: Veronalabs Wp Sms.

## How do I fix CVE-2021-24561?

No fix has been published for CVE-2021-24561 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24561 being exploited?

There is no known exploitation of CVE-2021-24561 in the wild and no public exploit code.

## Other vulnerabilities in Unknown WP SMS

- [CVE-2024-24881](https://insights.sbomify.com/CVE-2024-24881/): WordPress WP SMS Plugin <= 6.5.2 is vulnerable to Cross Site Scripting (XSS) (high 7.1)
- [CVE-2023-32742](https://insights.sbomify.com/CVE-2023-32742/): WordPress WP SMS Plugin <= 6.1.4 is vulnerable to Cross Site Scripting (XSS) (high 7.1)
- [CVE-2024-25920](https://insights.sbomify.com/CVE-2024-25920/): WordPress WP SMS plugin <= 6.3.4 - Cross Site Scripting (XSS) vulnerability (medium 6.5)
- [CVE-2023-6981](https://insights.sbomify.com/CVE-2023-6981/): WP SMS <= 6.5 - Authenticated (Admin+) SQL Injection to Reflected Cross-Site Scripting (medium 6.1)
- [CVE-2024-34811](https://insights.sbomify.com/CVE-2024-34811/): WordPress WP SMS plugin <= 6.5.1 - Cross Site Scripting (XSS) vulnerability (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24561 and fix it if it is affected.

What it is: CVE-2021-24561 is a medium-severity cross-site scripting vulnerability in Unknown WP SMS, published on 23 Aug 2021. 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-2021-24561 in the wild and no public exploit code.

Affected product: Unknown WP SMS. 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-2021-24561/ (Markdown: https://insights.sbomify.com/CVE-2021-24561/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24561
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24561
- OSV: https://osv.dev/vulnerability/CVE-2021-24561

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24561/
Summaries are generated and may contain mistakes; the official description above is the record.