CVE-2025-66450

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared to other users. When sharing chats wit...

CVE-2025-66451

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when creating prompts, JSON requests are sent to define and modify the prompts via PATCH endpoint for prompt groups /api/prompts/groups/:groupId. However, the request bodies are not sufficiently validated for prop...

CVE-2025-66452

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, there is no handler for JSON parsing errors; SyntaxError from express.json includes user input in the error message, which gets reflected in responses. User input including HTML/JavaScript can be exposed in error...

CVE-2025-66452 LibreChat's lack of JSON parsing error handling can lead to XSS

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, there is no handler for JSON parsing errors; SyntaxError from express.json includes user input in the error message, which gets reflected in responses. User input including HTML/JavaScript can be exposed in error...

CVE-2025-66452 LibreChat's lack of JSON parsing error handling can lead to XSS

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, there is no handler for JSON parsing errors; SyntaxError from express.json includes user input in the error message, which gets reflected in responses. User input including HTML/JavaScript can be exposed in error...

CVE-2025-66452

LibreChat (versions ≤ 0.8.0) is affected by a lack of handling for JSON parsing errors in express.json(). A SyntaxError triggered by user input can be reflected in error responses, exposing input (including HTML/JavaScript) and creating an XSS risk if Content-Type isn’t strictly enforced. The iss...

EUVD-2025-202928

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, there is no handler for JSON parsing errors; SyntaxError from express.json includes user input in the error message, which gets reflected in responses. User input including HTML/JavaScript can be exposed in error...

CVE-2025-66452 LibreChat's lack of JSON parsing error handling can lead to XSS

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, there is no handler for JSON parsing errors; SyntaxError from express.json includes user input in the error message, which gets reflected in responses. User input including HTML/JavaScript can be exposed in error...

CVE-2025-66451 LibreChat's Improper Input Validation in Prompt Creation API Enables Unauthorized Permission Changes

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when creating prompts, JSON requests are sent to define and modify the prompts via PATCH endpoint for prompt groups /api/prompts/groups/:groupId. However, the request bodies are not sufficiently validated for prop...

CVE-2025-66451 LibreChat's Improper Input Validation in Prompt Creation API Enables Unauthorized Permission Changes

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when creating prompts, JSON requests are sent to define and modify the prompts via PATCH endpoint for prompt groups /api/prompts/groups/:groupId. However, the request bodies are not sufficiently validated for prop...

EUVD-2025-202929

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when creating prompts, JSON requests are sent to define and modify the prompts via PATCH endpoint for prompt groups /api/prompts/groups/:groupId. However, the request bodies are not sufficiently validated for prop...

CVE-2025-66451

LibreChat (ChatGPT clone) prior to version 0.8.1 is affected by improper input validation in the prompt-creation API. In versions 0.8.0 and below, PATCH /api/prompts/groups/:groupId accepts req.body without filtering sensitive fields, allowing modifications to prompts beyond intended front-end be...

CVE-2025-66451 LibreChat's Improper Input Validation in Prompt Creation API Enables Unauthorized Permission Changes

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when creating prompts, JSON requests are sent to define and modify the prompts via PATCH endpoint for prompt groups /api/prompts/groups/:groupId. However, the request bodies are not sufficiently validated for prop...

CVE-2025-66450

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared to other users. When sharing chats wit...

CVE-2025-66450 LibreChat JSON Injection in Chat POST Allows Remote Resource Inclusion and PXSS via Image Upload

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared to other users. When sharing chats wit...

EUVD-2025-202930

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared to other users. When sharing chats wit...

CVE-2025-66450 LibreChat JSON Injection in Chat POST Allows Remote Resource Inclusion and PXSS via Image Upload

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared to other users. When sharing chats wit...

CVE-2025-66450

CVE-2025-66450 affects LibreChat. Versions 0.8.0 and below allow an attacker to modify the iconURL parameter in a POST request, causing malicious code to be stored in a chat and potentially shared with others. This can lead to privacy loss for users who view the shared chat link. The issue is add...

CVE-2025-66450 LibreChat JSON Injection in Chat POST Allows Remote Resource Inclusion and PXSS via Image Upload

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared to other users. When sharing chats wit...

PT-2025-50773

Name of the Vulnerable Software and Affected Versions LibreChat versions 0.8.0 and below Description LibreChat, a ChatGPT clone with additional features, does not have a handler for JSON parsing errors. A SyntaxError originating from express.json includes user input in the error message, which is...