# CVE-2023-48305: Nextcloud Server user_ldap app logs user passwords in the log file on level debug

> Nextcloud Server logs plaintext user passwords when debug logging is enabled, exposing credentials if log files are leaked.

- **Severity:** Medium 4.2 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Nov 2023
- **Updated:** 27 Nov 2024
- **Also known as:** GHSA-35p6-4992-w5fr

## What is CVE-2023-48305?

CVE-2023-48305 is a medium-severity vulnerability in Nextcloud Nextcloud Server, published on 21 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and Nextcloud Enterprise Server, when the log level was set to debug, the user_ldap app logged user passwords in plaintext into the log file. If the log file was then leaked or shared in any way the users' passwords would be leaked. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.11, 26.0.6, and 27.1.0 contain a patch for this issue. As a workaround, change config setting `loglevel` to `1` or higher (should always be higher than 1 in production environments).

Weakness: CWE-312 (Cleartext Storage of Sensitive Information)

## Which versions are affected by CVE-2023-48305?

It affects 1 product.


Products: Nextcloud Nextcloud Server.

## How do I fix CVE-2023-48305?

No fix has been published for CVE-2023-48305 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-48305 being exploited?

There is no known exploitation of CVE-2023-48305 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-2023-48305 and fix it if it is affected.

What it is: CVE-2023-48305 is a medium-severity vulnerability in Nextcloud Nextcloud Server, published on 21 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-48305 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-2023-48305/ (Markdown: https://insights.sbomify.com/CVE-2023-48305/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-48305
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-48305
- OSV: https://osv.dev/vulnerability/CVE-2023-48305

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-48305/
Summaries are generated and may contain mistakes; the official description above is the record.