# CVE-2020-12530: Cross-site scripting in mbCONNECT24

> Attackers can inject malicious scripts via a GET parameter in redirect.php, potentially leading to session hijacking or code execution.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A: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:** 2 Mar 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-q8cq-p98h-wf2v

## What is CVE-2020-12530?

CVE-2020-12530 is a medium-severity cross-site scripting vulnerability in mbCONNECT24, published on 2 Mar 2021. 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

An issue was discovered in MB connect line mymbCONNECT24 and mbCONNECT24 software in all versions through V2.6.2. There is an XSS issue in the redirect.php allowing an attacker to inject code via a get parameter.

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

## Which versions are affected by CVE-2020-12530?

It affects 2 products.


Products: Mbconnectline Mbconnect24, Mbconnectline Mymbconnect24.

## How do I fix CVE-2020-12530?

No fix has been published for CVE-2020-12530 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-12530 being exploited?

There is no known exploitation of CVE-2020-12530 in the wild and no public exploit code.

## Other vulnerabilities in mbCONNECT24

- [CVE-2020-35565](https://insights.sbomify.com/CVE-2020-35565/): Security feature bypass in n/a (critical 9.8)
- [CVE-2020-10383](https://insights.sbomify.com/CVE-2020-10383/): Code injection in n/a (critical 9.8)
- [CVE-2026-33615](https://insights.sbomify.com/CVE-2026-33615/): MB connect line mbCONNECT24 vulnerable to an unauthenticated SQL injection in the setinfo Endpoint (critical 9.1)
- [CVE-2023-0985](https://insights.sbomify.com/CVE-2023-0985/): Helmholz and MB Connect Line: Account takeover via password reset in multiple products (high 8.8)
- [CVE-2020-10382](https://insights.sbomify.com/CVE-2020-10382/): Code injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-12530 and fix it if it is affected.

What it is: CVE-2020-12530 is a medium-severity cross-site scripting vulnerability in mbCONNECT24, published on 2 Mar 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-12530 in the wild and no public exploit code.

Affected product: mbCONNECT24. 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-2020-12530/ (Markdown: https://insights.sbomify.com/CVE-2020-12530/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-12530
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-12530
- OSV: https://osv.dev/vulnerability/CVE-2020-12530

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-12530/
Summaries are generated and may contain mistakes; the official description above is the record.