CVE-2024-11171Public exploitNetwork attack vector

Unauthenticated service crash via unbounded avatar upload

Published Mar 20, 2025 · Updated Oct 15, 2025

Improper upload validation in Danny Avila LibreChat before 0.7.6 allows remote attackers to crash the server via an oversized avatar. The avatar upload route uses Multer's default in-memory storage without a file-size limit, so it buffers the entire multipart file before validation. No authentication or user interaction is required, and exhausting available memory terminates the service for all users.

CVSS severity7.5
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper upload validation in Danny Avila LibreChat before 0.7.6 allows remote attackers to crash the server via an oversized avatar. The avatar upload route uses Multer's default in-memory storage without a file-size limit, so it buffers the entire multipart file before validation. No authentication or user interaction is required, and exhausting available memory terminates the service for all users.

The record

CVE
CVE-2024-11171
Published
Mar 20, 2025
Updated
Oct 15, 2025
Vendor
Danny Avila
Product
LibreChat
Classifications
CWE-770, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <0.7.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Danny Avila · LibreChatversion=unspecified <0.7.6

Published CVSS scores

7.5huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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