PT-2026-52497 · Danny Avila · Librechat
Published
2026-06-25
·
Updated
2026-06-25
·
CVE-2026-54040
CVSS v3.1
5.9
Medium
| Vector | AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N |
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.
Fix
Missing Authentication
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Weakness Enumeration
Related Identifiers
Affected Products
Librechat