| 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) | 2026-03-13 |
| Last modified | 2026-06-17 |
| Affected versions | librechat < 0.8.3 |
| Fixed in | 0.8.3 |
| Weakness | CWE-248 |
| CISA KEV | not listed |
NVD description
LibreChat is a ChatGPT clone with additional features. Prior to 0.8.3-rc1, a Denial of Service (DoS) vulnerability exists in the DELETE /api/convos endpoint that allows an authenticated attacker to crash the Node.js server process by sending malformed requests. The DELETE /api/convos route handler attempts to destructure req.body.arg without validating that it exists. The server crashes due to an unhandled TypeError that bypasses Express error handling middleware and triggers process.exit(1). This vulnerability is fixed in 0.8.3-rc1.
What to do
- Upgrade LibreChat to
0.8.3or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
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