CVE-2026-54040
LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5.9EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
25 Jun 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
Affected products
danny-avila · LibreChatWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →