| Component | LibreChat |
| Severity | medium (CVSS 6.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| Published (NVD) | 2026-06-25 |
| Last modified | 2026-06-29 |
| Affected versions | librechat <= 0.8.3 |
| Fixed in | see the vendor advisory |
| Weakness | CWE-770 |
| CISA KEV | not listed |
NVD 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.
What to do
- NVD lists no fixed version yet: follow the vendor advisory below and keep LibreChat off the public internet until a fix ships.
- Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
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