CVE-2026-54033: CWE-918: Server-Side Request Forgery (SSRF) in danny-avila LibreChat
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, LibreChat allows users to configure custom OpenAI-compatible API endpoints by setting a baseURL. This URL is used to construct HTTP requests without any SSRF validation — no private IP check, no scheme restriction, no DNS pinning. An authenticated user can set baseURL to internal network addresses. This vulnerability is fixed in 0.8.4-rc1.
AI Analysis
Technical Summary
CVE-2026-54033 is a Server-Side Request Forgery (SSRF) vulnerability in danny-avila's LibreChat product. Before version 0.8.4-rc1, LibreChat allows authenticated users to specify a baseURL for OpenAI-compatible API endpoints without any SSRF protections such as private IP checks, scheme restrictions, or DNS pinning. This enables attackers with authentication to make the server send HTTP requests to internal network addresses, potentially exposing internal resources. The vulnerability is addressed in version 0.8.4-rc1.
Potential Impact
An authenticated user can exploit this SSRF vulnerability to make the LibreChat server send HTTP requests to internal network resources. This could lead to unauthorized access or information disclosure of internal services. The CVSS score of 7.7 reflects high severity due to network attack vector, low attack complexity, required privileges, and high confidentiality impact without integrity or availability impact.
Mitigation Recommendations
Upgrade LibreChat to version 0.8.4-rc1 or later, where this SSRF vulnerability is fixed. Since no official patch or remediation level is explicitly stated beyond the fixed version, applying this update is the recommended mitigation.
CVE-2026-54033: CWE-918: Server-Side Request Forgery (SSRF) in danny-avila LibreChat
Description
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, LibreChat allows users to configure custom OpenAI-compatible API endpoints by setting a baseURL. This URL is used to construct HTTP requests without any SSRF validation — no private IP check, no scheme restriction, no DNS pinning. An authenticated user can set baseURL to internal network addresses. This vulnerability is fixed in 0.8.4-rc1.
CVSS v3.1
Score 7.7high
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
CVE-2026-54033 is a Server-Side Request Forgery (SSRF) vulnerability in danny-avila's LibreChat product. Before version 0.8.4-rc1, LibreChat allows authenticated users to specify a baseURL for OpenAI-compatible API endpoints without any SSRF protections such as private IP checks, scheme restrictions, or DNS pinning. This enables attackers with authentication to make the server send HTTP requests to internal network addresses, potentially exposing internal resources. The vulnerability is addressed in version 0.8.4-rc1.
Potential Impact
An authenticated user can exploit this SSRF vulnerability to make the LibreChat server send HTTP requests to internal network resources. This could lead to unauthorized access or information disclosure of internal services. The CVSS score of 7.7 reflects high severity due to network attack vector, low attack complexity, required privileges, and high confidentiality impact without integrity or availability impact.
Mitigation Recommendations
Upgrade LibreChat to version 0.8.4-rc1 or later, where this SSRF vulnerability is fixed. Since no official patch or remediation level is explicitly stated beyond the fixed version, applying this update is the recommended mitigation.
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: 6a3d5b504853345fc133728c
Added to database: 06/25/2026, 16:46:08 UTC
Last enriched: 06/25/2026, 17:01:21 UTC
Last updated: 06/26/2026, 01:01:09 UTC
Views: 7
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