---
id: CVE-2025-8849
title: >-
  LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due
  to unbounded parameter values in the `/api/memories` endpoint
summary: >-
  LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due
  to unbounded parameter values in the `/api/memories` endpoint. The `key` and
  `value` parameters accept arbitrarily large inputs without proper validation,
  lead…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
vendor: librechat
product: librechat
affected:
  - librechat = 0.7.9
published: '2025-10-31'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T21:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-8849'
references:
  - url: >-
      https://github.com/danny-avila/librechat/commit/edf33bedcbb08c33e59df76f06454ed7efd896f9
    label: security@huntr.dev
  - url: 'https://huntr.com/bounties/e9d9404c-cd19-4226-a580-9cba14b7d7d6'
    label: security@huntr.dev
tags:
  - nvd
epss: 0.00347
epssPercentile: 0.26182
ingestedAt: '2026-10-07T21:54:14.910Z'
---

## Overview

LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the `/api/memories` endpoint. The `key` and `value` parameters accept arbitrarily large inputs without proper validation, leading to a null pointer error in the Rust-based backend when excessively large values are submitted. This results in the inability to create new memories, impacting the stability of the service.

## Affected

- `librechat = 0.7.9`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.