CVE-2026-54037 — LibreChat: Incomplete Fix for CVE-2025-7105 — /api/convos/duplicate Lacks Rate Limiting Applied to /api/convos/fork

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
danny-avila / LibreChat	affected < 0.8.4-rc1

CWE

CWE-770

References

https://github.com/danny-avila/LibreChat/security/advisories/GHSA-g445-9wq6-jf3v

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.