# CVE-2024-11171: Improper Input Validation in danny-avila/librechat

> Unrestricted file upload size in LibreChat causes server crashes via out-of-memory errors, allowing unauthenticated attackers to deny service.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Mar 2025
- **Updated:** 15 Oct 2025
- **Also known as:** GHSA-c2qr-w9p6-cxgr

## What is CVE-2024-11171?

CVE-2024-11171 is a high-severity denial of service vulnerability in Librechat Librechat, published on 20 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In danny-avila/librechat version git 0c2a583, there is an improper input validation vulnerability. The application uses multer middleware for handling multipart file uploads. When using in-memory storage (the default setting for multer), there is no limit on the upload file size. This can lead to a server crash due to out-of-memory errors when handling large files. An attacker without any privileges can exploit this vulnerability to cause a complete denial of service. The issue is fixed in version 0.7.6.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2024-11171?

It affects 1 product.


Products: Librechat Librechat.

## How do I fix CVE-2024-11171?

No fix has been published for CVE-2024-11171 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-11171 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-11171 exists.

## Other vulnerabilities in Librechat Librechat

- [CVE-2026-32625](https://insights.sbomify.com/CVE-2026-32625/): LibreChat Exfiltrates Server Secrets via MCP Server URL Injection (critical 9.6)
- [CVE-2024-11167](https://insights.sbomify.com/CVE-2024-11167/): Improper Access Control in danny-avila/librechat (critical 9.4)
- [CVE-2026-22252](https://insights.sbomify.com/CVE-2026-22252/): LibreChat MCP Stdio Remote Command Execution (critical 9.1)
- [CVE-2025-69222](https://insights.sbomify.com/CVE-2025-69222/): LibreChat is vulnerable to Server-Side Request Forgery due to missing restrictions (critical 9.1)
- [CVE-2024-41704](https://insights.sbomify.com/CVE-2024-41704/): Path traversal in n/a (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-11171 and fix it if it is affected.

What it is: CVE-2024-11171 is a high-severity denial of service vulnerability in Librechat Librechat, published on 20 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-11171 exists.

Affected product: Librechat Librechat. 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-2024-11171/ (Markdown: https://insights.sbomify.com/CVE-2024-11171/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-11171
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-11171
- OSV: https://osv.dev/vulnerability/CVE-2024-11171

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-11171/
Summaries are generated and may contain mistakes; the official description above is the record.