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.

Project Subscriptions

Vendors Products
Danny-avila Subscribe
Libre Chat Subscribe
Librechat Subscribe
Librechat Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 25 Jun 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Danny-avila
Danny-avila libre Chat
Vendors & Products Danny-avila
Danny-avila libre Chat

Thu, 25 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 25 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
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.
Title LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-25T18:13:32.543Z

Reserved: 2026-06-11T16:57:50.020Z

Link: CVE-2026-54040

cve-icon Vulnrichment

Updated: 2026-06-25T18:13:20.487Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-25T17:16:41.123

Modified: 2026-06-29T16:00:14.880

Link: CVE-2026-54040

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-25T21:15:05Z

Weaknesses