CVE-2026-54037: 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-2025-7105 added forkIpLimiter and forkUserLimiter rate limiters to POST /api/convos/fork to prevent rapid-fire conversation duplication. However, the POST /api/convos/duplicate endpoint — which is in the same file and performs the exact same expensive database operations — was not given any rate limiter. An authenticated user can bypass the CVE-2025-7105 fix by using /duplicate instead of /fork to exhaust server resources. This vulnerability is fixed in 0.8.4-rc1.
AI Analysis
Technical Summary
CVE-2026-54037 is a resource exhaustion vulnerability in danny-avila's LibreChat. The vulnerability arises because the POST /api/convos/duplicate endpoint lacks rate limiting, unlike the related /fork endpoint which has forkIpLimiter and forkUserLimiter protections. An authenticated user can exploit this by repeatedly invoking /duplicate to perform costly database operations, potentially exhausting server resources. The vulnerability is addressed in LibreChat version 0.8.4-rc1.
Potential Impact
The vulnerability allows an authenticated user to exhaust server resources by abusing the /api/convos/duplicate endpoint, leading to denial of service conditions. There is no impact on confidentiality or integrity, but availability is affected.
Mitigation Recommendations
Upgrade LibreChat to version 0.8.4-rc1 or later, where the vulnerability is fixed by adding appropriate rate limiting to the /api/convos/duplicate endpoint. Patch status is confirmed by the vendor fix in 0.8.4-rc1.
CVE-2026-54037: 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-2025-7105 added forkIpLimiter and forkUserLimiter rate limiters to POST /api/convos/fork to prevent rapid-fire conversation duplication. However, the POST /api/convos/duplicate endpoint — which is in the same file and performs the exact same expensive database operations — was not given any rate limiter. An authenticated user can bypass the CVE-2025-7105 fix by using /duplicate instead of /fork to exhaust server resources. This vulnerability is fixed in 0.8.4-rc1.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-54037 is a resource exhaustion vulnerability in danny-avila's LibreChat. The vulnerability arises because the POST /api/convos/duplicate endpoint lacks rate limiting, unlike the related /fork endpoint which has forkIpLimiter and forkUserLimiter protections. An authenticated user can exploit this by repeatedly invoking /duplicate to perform costly database operations, potentially exhausting server resources. The vulnerability is addressed in LibreChat version 0.8.4-rc1.
Potential Impact
The vulnerability allows an authenticated user to exhaust server resources by abusing the /api/convos/duplicate endpoint, leading to denial of service conditions. There is no impact on confidentiality or integrity, but availability is affected.
Mitigation Recommendations
Upgrade LibreChat to version 0.8.4-rc1 or later, where the vulnerability is fixed by adding appropriate rate limiting to the /api/convos/duplicate endpoint. Patch status is confirmed by the vendor fix in 0.8.4-rc1.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-11T16:57:50.019Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3d5b504853345fc133728f
Added to database: 06/25/2026, 16:46:08 UTC
Last enriched: 06/25/2026, 17:02:19 UTC
Last updated: 06/25/2026, 20:13:59 UTC
Views: 4
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