Sentry: Improper authentication on SAML SSO process allows user identity linking

ImpactA critical vulnerability was discovered in the SAML SSO implementation of Sentry. It was reported to us via our private bug bounty program.The vulnerability allows an attacker to take over any user account by using a malicious SAML Identity Provider and another organization on the same Sent...

PYSEC-2026-533 Sentry: Improper authentication on SAML SSO process allows user identity linking

Impact A critical vulnerability was discovered in the SAML SSO implementation of Sentry. It was reported to us via our private bug bounty program. The vulnerability allows an attacker to take over any user account by using a malicious SAML Identity Provider and another organization on the same...

ajenti.plugin.core has password bypass when 2FA is activated

ImpactIf the 2FA was activated, it was possible to bypass the password authentication PatchesThis is fixed in the version 0.112. Users should upgrade to this version as soon as possible...

PYSEC-2026-266 ajenti.plugin.core has password bypass when 2FA is activated

Impact If the 2FA was activated, it was possible to bypass the password authentication Patches This is fixed in the version 0.112. Users should upgrade to this version as soon as possible...

PT-2026-53603

Impact A critical vulnerability was discovered in the SAML SSO implementation of Sentry. It was reported to us via Sentry's private bug bounty program. The vulnerability allows an attacker to take over any user account by using a malicious SAML Identity Provider and another organization on the sa...

PT-2026-53363

Impact If the 2FA was activated, it was possible to bypass the password authentication Patches This is fixed in the version 0.112. Users should upgrade to this version as soon as possible...

Ukraine Says Russian Intelligence Used Fake Support Texts to Steal Messaging Credentials

The Security Service of Ukraine SSU said it, together with the U.S. Federal Bureau of Investigation FBI, uncovered a long-running campaign orchestrated by Russian intelligence services to break into the messaging accounts of government officials, military personnel, politicians, and activists in...

CVE-2026-54040

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...

CVE-2026-54040 LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass

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...

CVE-2026-54040

Summary of CVE-2026-54040 (LibreChat): Before version 0.8.4-rc1, the POST /api/auth/2fa/backup/regenerate endpoint regenerates all 2FA backup codes without requiring a valid TOTP token or existing backup code verification. An attacker with a stolen session token can silently replace a victim’s 2F...

EUVD-2026-39456

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...

CVE-2026-54040 LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass

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...

CVE-2026-54040 LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass

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...

CVE-2026-54040

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...

CVE-2026-54036

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 existi...

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

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 existi...

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

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 existi...

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

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 existi...

CVE-2026-54036

CVE-2026-54036 (LibreChat) describes a vulnerability where the GET /api/auth/2fa/enable endpoint can be invoked by an authenticated user (or attacker with a stolen session) even when 2FA is fully enabled. The call overwrites the existing TOTP secret, regenerates backup codes, and sets twoFactorEn...

PT-2026-52497

Name of the Vulnerable Software and Affected Versions LibreChat versions prior to 0.8.4-rc1 Description The application allows the regeneration of all two-factor authentication 2FA backup codes without requiring a Time-based One-Time Password TOTP token or the verification of an existing backup...