CVE-2026-54024: CWE-770: Allocation of Resources Without Limits or Throttling in danny-avila LibreChat
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the fix for CVE-2024-11171 (commit bb58a2d0) added limits: { fileSize } to createMulterInstance() in the file upload routes. However, the POST /api/convos/import endpoint uses a separate multer instance that was never updated with the same limits configuration. Combined with the application-level size check being disabled by default (the CONVERSATION_IMPORT_MAX_FILE_SIZE_BYTES env var is commented out in .env.example), an authenticated user can upload arbitrarily large files to exhaust server disk space and memory. This vulnerability is fixed in 0.8.4-rc1.
AI Analysis
Technical Summary
LibreChat, an enhanced ChatGPT clone, had a vulnerability where the POST /api/convos/import endpoint used a multer instance without file size limits, unlike other upload routes that had limits added in response to CVE-2024-11171. Because the application-level size check was disabled by default, authenticated users could upload very large files, leading to exhaustion of server disk and memory resources. This vulnerability is identified as CWE-770 (Allocation of Resources Without Limits or Throttling). The issue was fixed in version 0.8.4-rc1 by applying the same file size limits to the import endpoint's multer instance.
Potential Impact
An authenticated user can upload arbitrarily large files via the import endpoint, potentially exhausting server disk space and memory. This results in a denial of service condition affecting availability. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
A fix is available in LibreChat version 0.8.4-rc1, which adds file size limits to the import endpoint's file upload handler. Users should upgrade to version 0.8.4-rc1 or later to remediate this vulnerability. Patch status is not explicitly confirmed beyond this version, so verify with the vendor advisory for current guidance.
CVE-2026-54024: CWE-770: Allocation of Resources Without Limits or Throttling in danny-avila LibreChat
Description
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the fix for CVE-2024-11171 (commit bb58a2d0) added limits: { fileSize } to createMulterInstance() in the file upload routes. However, the POST /api/convos/import endpoint uses a separate multer instance that was never updated with the same limits configuration. Combined with the application-level size check being disabled by default (the CONVERSATION_IMPORT_MAX_FILE_SIZE_BYTES env var is commented out in .env.example), an authenticated user can upload arbitrarily large files to exhaust server disk space and memory. This vulnerability is fixed in 0.8.4-rc1.
CVSS v3.1
Score 6.5medium
Affected software
pkg:github/danny-avila/LibreChatRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
LibreChat, an enhanced ChatGPT clone, had a vulnerability where the POST /api/convos/import endpoint used a multer instance without file size limits, unlike other upload routes that had limits added in response to CVE-2024-11171. Because the application-level size check was disabled by default, authenticated users could upload very large files, leading to exhaustion of server disk and memory resources. This vulnerability is identified as CWE-770 (Allocation of Resources Without Limits or Throttling). The issue was fixed in version 0.8.4-rc1 by applying the same file size limits to the import endpoint's multer instance.
Potential Impact
An authenticated user can upload arbitrarily large files via the import endpoint, potentially exhausting server disk space and memory. This results in a denial of service condition affecting availability. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
A fix is available in LibreChat version 0.8.4-rc1, which adds file size limits to the import endpoint's file upload handler. Users should upgrade to version 0.8.4-rc1 or later to remediate this vulnerability. Patch status is not explicitly confirmed beyond this version, so verify with the vendor advisory for current guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-11T16:57:50.018Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3d5b504853345fc133727d
Added to database: 06/25/2026, 16:46:08 UTC
Last enriched: 06/25/2026, 17:02:42 UTC
Last updated: 06/25/2026, 20:14:36 UTC
Views: 4
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