# CVE-2020-27340: Open redirect in n/a

> An attacker can redirect users to unauthorized websites via the online help portal due to insufficient access control in Mitel MiCollab.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:L`)
- **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:** 18 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-hmm3-wj4g-8w8g

## What is CVE-2020-27340?

CVE-2020-27340 is a medium-severity vulnerability in n/a, published on 18 Dec 2020. 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

The online help portal of Mitel MiCollab before 9.2 could allow an attacker to redirect a user to an unauthorized website by executing malicious script due to insufficient access control.

## Which versions are affected by CVE-2020-27340?

It affects 1 product.


Products: Mitel Micollab.

## How do I fix CVE-2020-27340?

No fix has been published for CVE-2020-27340 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-27340 being exploited?

There is no known exploitation of CVE-2020-27340 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-26143](https://insights.sbomify.com/CVE-2022-26143/): MiCollab, MiVoice Business Express Access Control (critical 9.8, exploited in the wild)
- [CVE-2024-41713](https://insights.sbomify.com/CVE-2024-41713/): Mitel MiCollab Path Traversal (critical 9.1, exploited in the wild)
- [CVE-2024-55550](https://insights.sbomify.com/CVE-2024-55550/): Mitel MiCollab Path Traversal (medium 4.4, exploited in the wild)
- [CVE-2024-35285](https://insights.sbomify.com/CVE-2024-35285/): Command injection in n/a (critical 9.8)
- [CVE-2024-35286](https://insights.sbomify.com/CVE-2024-35286/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-27340 and fix it if it is affected.

What it is: CVE-2020-27340 is a medium-severity vulnerability in n/a, published on 18 Dec 2020. 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-2020-27340 in the wild and no public exploit code.

Affected product: n/a. 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-2020-27340/ (Markdown: https://insights.sbomify.com/CVE-2020-27340/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-27340
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-27340
- OSV: https://osv.dev/vulnerability/CVE-2020-27340

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-27340/
Summaries are generated and may contain mistakes; the official description above is the record.