Security Advisory

CVE-2026-54040

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-25 15:45:23

Last updated 2026-06-25 18:13:32

Assigner GitHub_M

CVSS score 5.9

State PUBLISHED

Description

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.

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