cvedb.io
CVE-2026-54040
MEDIUM · CVSS 5.9
EPSS exploitation probability: 0%
Published 2026-06-25T17:16:41.123 · Last modified 2026-06-29T16:00:14.880

Summary

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST /api/auth/2fa/backup/regenerate endpoint regenerates all 2FA backup codes without requiring any TOTP token or existing backup code verification. An attacker with a stolen session token can silently replace a victim's backup codes and use them to bypass 2FA login or disable 2FA entirely. This vulnerability is fixed in 0.8.4-rc1.

Affected products

librechat — librechat

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.