Vulnerability · Published Jun 25, 2026 · Assigned by GitHub_M

CVE-2026-54036LibreChat: 2FA Re-enrollment Allows Full Account 2FA Takeover Without OTP Verification

Medium 5.3

In plain English

A medium-severity missing authentication in LibreChat from danny-avila. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.4%top 67.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the GET /api/auth/2fa/enable endpoint can be called by an authenticated user (or attacker with a stolen session) even when 2FA is already fully enabled on the account. This endpoint overwrites the existing TOTP secret, generates new backup codes, and sets twoFactorEnabled to false — all without requiring any TOTP or backup code verification. An attacker with a valid session token can completely take over a victim's 2FA, locking the legitimate user out of their own two-factor authentication. This vulnerability is fixed in 0.8.4-rc1.

Affected products (as reported)

Vendor	Product	Versions
danny-avila	LibreChat	< 0.8.4-rc1

Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

References

https://github.com/danny-avila/LibreChat/security/advisories/GHSA-45fp-6q26-wfgq x_refsource_CONFIRM