# CVE-2021-47830: GetSimple CMS My SMTP Contact Plugin 1.1.1 - CSRF

> An attacker can trick an authenticated administrator into changing SMTP settings via a malicious webpage, leading to unauthorized configuration changes.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Jan 2026
- **Updated:** 7 Apr 2026
- **Also known as:** GHSA-4qf5-7jr3-q9pq

## What is CVE-2021-47830?

CVE-2021-47830 is a medium-severity vulnerability in GetSimple CMS My SMTP Contact Plugin, published on 21 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

GetSimple CMS My SMTP Contact Plugin 1.1.1 contains a cross-site request forgery (CSRF) vulnerability. Attackers can craft a malicious webpage that, when visited by an authenticated administrator, can change SMTP configuration settings in the plugin. This may allow unauthorized changes but does not directly enable remote code execution.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2021-47830?

It affects 1 product.


Products: Get-Simple Getsimplecms.

## How do I fix CVE-2021-47830?

No fix has been published for CVE-2021-47830 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-47830 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47830 exists.

## Other vulnerabilities in GetSimple CMS My SMTP Contact Plugin

- [CVE-2023-46042](https://insights.sbomify.com/CVE-2023-46042/): Code injection in n/a (critical 9.8)
- [CVE-2020-18191](https://insights.sbomify.com/CVE-2020-18191/): Path traversal in n/a (critical 9.1)
- [CVE-2013-10032](https://insights.sbomify.com/CVE-2013-10032/): GetSimple CMS 3.2.1 Authenticated RCE via Arbitrary PHP File Upload (high 8.7)
- [CVE-2021-47778](https://insights.sbomify.com/CVE-2021-47778/): GetSimple CMS My SMTP Contact Plugin 1.1.2 - PHP Code Injection (high 8.6)
- [CVE-2021-47860](https://insights.sbomify.com/CVE-2021-47860/): GetSimple CMS Custom JS 0.1 - CSRF to XSS to RCE (high 8.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-47830 and fix it if it is affected.

What it is: CVE-2021-47830 is a medium-severity vulnerability in GetSimple CMS My SMTP Contact Plugin, published on 21 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47830 exists.

Affected product: GetSimple CMS My SMTP Contact Plugin. 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-2021-47830/ (Markdown: https://insights.sbomify.com/CVE-2021-47830/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-47830
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-47830
- OSV: https://osv.dev/vulnerability/CVE-2021-47830

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-47830/
Summaries are generated and may contain mistakes; the official description above is the record.