CVE-2026-54030 LibreChat: Missing Resource Parameter Validation in MCP OAuth Flow

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.5, LibreChat's MCP OAuth implementation does not validate that the resource parameter from OAuth Protected Resource metadata RFC 9728 matches the configured MCP server URL, allowing a malicious MCP server to...

CVE-2026-54030 LibreChat: Missing Resource Parameter Validation in MCP OAuth Flow

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.5, LibreChat's MCP OAuth implementation does not validate that the resource parameter from OAuth Protected Resource metadata RFC 9728 matches the configured MCP server URL, allowing a malicious MCP server to...

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-2026-54036

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

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-2026-52493

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the DELETE /api/messages/:conversationId/:messageId endpoint allows any authenticated user to delete any other user's messages. The validateMessageReq middleware only validates that the conversationId...

PT-2026-52494

Name of the Vulnerable Software and Affected Versions LibreChat versions prior to 0.8.5 Description LibreChat is an enhanced ChatGPT clone supporting multiple AI providers. The MCP OAuth implementation fails to validate that the resource parameter from OAuth Protected Resource metadata RFC 9728...

PT-2026-52492

Name of the Vulnerable Software and Affected Versions LibreChat versions prior to 0.8.4-rc1 Description An authenticated user can upload files into the tool resources such as context or execute code of any agent without the required ownership or EDIT permissions. This occurs because the 'POST...

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...

PT-2026-52491

Name of the Vulnerable Software and Affected Versions LibreChat versions prior to 0.8.4-rc1 Description A flaw exists in the markdown artifact preview pipeline. The generateMarkdownHtml function located in client/src/utils/markdown.ts utilizes a custom image renderer that triggers a fallback to t...

The vulnerability of the API Endpoint component of the LibreChat artificial intelligence-based platform, which allows a hacker to compromise the integrity of the protected information.

The vulnerability of the API Endpoint component of the LibreChat artificial intelligence-based platform is related to a violation of expected behavior. Exploiting this vulnerability could allow an attacker, operating remotely, to compromise the integrity of the protected information...

The vulnerability of the LibreChat artificial intelligence-based platform, related to an error in processing exceptional states at the final `/api/convos` endpoint, allows a violator to trigger a service failure.

The vulnerability of the LibreChat artificial intelligence-based platform is related to an error in processing exceptional states at the final endpoint /api/convos. Exploiting this vulnerability could allow a malicious actor to cause service failures...

The vulnerability of the LibreChat artificial intelligence-based platform, related to the lack of access control when processing JWT tokens, allows attackers to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the LibreChat artificial intelligence-based platform is related to deficiencies in access control when processing JWT tokens. Exploiting this vulnerability could allow a malicious actor to compromise the confidentiality, integrity, and accessibility of the protected informati...

The vulnerability of the OAuth protocol implementation of the artificial intelligence-based platform LibreChat, which allows a perpetrator to gain unauthorized access to protected information.

The vulnerability of the OAuth protocol implementation of the artificial intelligence-based LibreChat platform is related to the lack of authentication for a critical function. Exploiting this vulnerability could allow a malicious actor to gain unauthorized access to protected information...

The vulnerability of the LibreChat artificial intelligence-based platform lies in its lack of mechanisms for processing input data that is recorded in system logs. This allows attackers to gain access and modify data in the logs.

The vulnerability of the LibreChat artificial intelligence-based platform is related to deficiencies in the mechanism for processing input data that is recorded in system logs. Exploiting this vulnerability can allow an attacker, operating remotely, to gain access to modify data in the log files...

CVE-2026-34371

LibreChat is a ChatGPT clone with additional features. Prior to 0.8.4, LibreChat trusts the name field returned by the executecode sandbox when persisting code-generated artifacts. On deployments using the default local file strategy, a malicious artifact filename containing traversal sequences f...

CVE-2026-44654

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.8.3, a shared-agent editor can delete file records through DELETE /api/files that the owner has reused across multiple agents. The deletion removes the file globally — not just from the...

CVE-2026-44653

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.8.3, users with only VIEW access to an MCP server can retrieve the server's decrypted admin-managed secrets through GET /api/mcp/servers and GET /api/mcp/servers/:serverName. The returned...