# CVE-2020-27358: Missing authorization in n/a

> Non-privileged users can access other users' conversation threads by manipulating the thread ID parameter in the CSV export feature.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Oct 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-3f4q-q2jq-qg34

## What is CVE-2020-27358?

CVE-2020-27358 is a medium-severity missing authorization vulnerability in n/a, published on 31 Oct 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An issue was discovered in REDCap 8.11.6 through 9.x before 10. The messenger's CSV feature (that allows users to export their conversation threads as CSV) allows non-privileged users to export one another's conversation threads by changing the thread_id parameter in the request to the endpoint Messenger/messenger_download_csv.php?title=Hey&thread_id={THREAD_ID}.

Weakness: CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2020-27358?

It affects 1 product.


Products: Vanderbilt Redcap.

## How do I fix CVE-2020-27358?

No fix has been published for CVE-2020-27358 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-27358 being exploited?

There is no known exploitation of CVE-2020-27358 in the wild and no public exploit code.

Public exploit code:

- CVE-2020-27358 and CVE-2020-27359 (github_poc): https://github.com/sebastian-mora/cve-2020-27358-27359

## Other vulnerabilities in n/a

- [CVE-2023-38825](https://insights.sbomify.com/CVE-2023-38825/): SQL injection in n/a (critical 9.8)
- [CVE-2020-26712](https://insights.sbomify.com/CVE-2020-26712/): SQL injection in n/a (critical 9.8)
- [CVE-2021-42136](https://insights.sbomify.com/CVE-2021-42136/): Cross-site scripting in n/a (critical 9.0)
- [CVE-2024-56310](https://insights.sbomify.com/CVE-2024-56310/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2024-56311](https://insights.sbomify.com/CVE-2024-56311/): Cross-site request forgery in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-27358 and fix it if it is affected.

What it is: CVE-2020-27358 is a medium-severity missing authorization vulnerability in n/a, published on 31 Oct 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-27358 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-2020-27358/ (Markdown: https://insights.sbomify.com/CVE-2020-27358/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-27358
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-27358
- OSV: https://osv.dev/vulnerability/CVE-2020-27358

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-27358/
Summaries are generated and may contain mistakes; the official description above is the record.