# CVE-2024-22401: All users can reset the allowed apps list for Nextcloud Guest App users

> Guest users can improperly modify the allowed apps list, bypassing intended restrictions on available applications.

- **Severity:** Medium 4.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 18 Jan 2024
- **Updated:** 21 Oct 2024
- **Also known as:** GHSA-wr87-hx3w-29hh

## What is CVE-2024-22401?

CVE-2024-22401 is a medium-severity missing authorization vulnerability in nextcloud security-advisories, published on 18 Jan 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Nextcloud guests app is a utility to create guest users which can only see files shared with them. In affected versions users could change the allowed list of apps, allowing them to use apps that were not intended to be used. It is recommended that the Guests app is upgraded to 2.4.1, 2.5.1 or 3.0.1. There are no known workarounds for this vulnerability.

Weakness: CWE-281 (Improper Preservation of Permissions)

## Which versions are affected by CVE-2024-22401?

It affects 1 product.


Products: Nextcloud Guests.

## How do I fix CVE-2024-22401?

No fix has been published for CVE-2024-22401 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-22401 being exploited?

There is no known exploitation of CVE-2024-22401 in the wild and no public exploit code.

## Other vulnerabilities in nextcloud security-advisories

- [CVE-2024-22402](https://insights.sbomify.com/CVE-2024-22402/): Improper handling of request URLs in Nextcloud Guests app allows guest users to bypass app allowlist (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-22401 and fix it if it is affected.

What it is: CVE-2024-22401 is a medium-severity missing authorization vulnerability in nextcloud security-advisories, published on 18 Jan 2024. 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-2024-22401 in the wild and no public exploit code.

Affected product: nextcloud security-advisories. 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-2024-22401/ (Markdown: https://insights.sbomify.com/CVE-2024-22401/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-22401
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-22401
- OSV: https://osv.dev/vulnerability/CVE-2024-22401

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-22401/
Summaries are generated and may contain mistakes; the official description above is the record.