# CVE-2022-24888: Possible Injection in Nextcloud Server

> Nextcloud Server allows file names with leading/trailing control characters, potentially enabling injection attacks, requiring an upgrade to fix.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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:** 27 Apr 2022
- **Updated:** 23 Apr 2025
- **Also known as:** GHSA-w3h6-p64h-q9jp

## What is CVE-2022-24888?

CVE-2022-24888 is a medium-severity vulnerability in Nextcloud Nextcloud Server, published on 27 Apr 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 20.0.14.4, 21.0.8, 22.2.4, and 23.0.1, it is possible to create files and folders that have leading and trailing \n, \r, \t, and \v characters. The server rejects files and folders that have these characters in the middle of their names, so this might be an opportunity for injection. This issue is fixed in versions 20.0.14.4, 21.0.8, 22.2.4, and 23.0.1. There are currently no known workarounds.

Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2022-24888?

It affects 1 product.


Products: Nextcloud Nextcloud Server.

## How do I fix CVE-2022-24888?

No fix has been published for CVE-2022-24888 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-24888 being exploited?

There is no known exploitation of CVE-2022-24888 in the wild and no public exploit code.

## Other vulnerabilities in Nextcloud Nextcloud Server

- [CVE-2021-32802](https://insights.sbomify.com/CVE-2021-32802/): Preview generation used third-party library not suited for user-generated content in Nextcloud server (critical 9.3)
- [CVE-2023-26482](https://insights.sbomify.com/CVE-2023-26482/): Scope of workflow operations is not validated in nextcloud server (critical 9.1)
- [CVE-2018-3775](https://insights.sbomify.com/CVE-2018-3775/): Auth bypass in Nextcloud Server (high 8.8)
- [CVE-2023-35172](https://insights.sbomify.com/CVE-2023-35172/): Nextcloud Server password reset endpoint is not brute force protected (high 8.7)
- [CVE-2023-32320](https://insights.sbomify.com/CVE-2023-32320/): Nextcloud Server's brute force protection allows someone to send more requests than intended (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-24888 and fix it if it is affected.

What it is: CVE-2022-24888 is a medium-severity vulnerability in Nextcloud Nextcloud Server, published on 27 Apr 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-24888 in the wild and no public exploit code.

Affected product: Nextcloud Nextcloud Server. 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-2022-24888/ (Markdown: https://insights.sbomify.com/CVE-2022-24888/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-24888
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-24888
- OSV: https://osv.dev/vulnerability/CVE-2022-24888

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-24888/
Summaries are generated and may contain mistakes; the official description above is the record.