In mintplex-labs/anything-llm versions up to and including 1.5.3, an issue was discovered where the password hash of a user is returned in the response after login (`POST /api/request-token`) and after account creations (`POST /api/admin/users/new`). This exposure occurs because the entire User object, including the bcrypt password hash, is included in the response sent to the frontend. This practice could potentially lead to sensitive information exposure despite the use of bcrypt, a strong hashing algorithm. It is recommended not to expose any clues about passwords to the frontend.

An uncontrolled resource consumption vulnerability exists in the `upload-link` endpoint of mintplex-labs/anything-llm. This vulnerability allows attackers to cause a denial of service (DOS) by shutting down the server through sending invalid upload requests. Specifically, the server can be made to shut down by sending an empty body with a 'Content-Length: 0' header or by sending a body with arbitrary content, such as 'asdasdasd', with a 'Content-Length: 9' header. The vulnerability is reproducible by users with at least a 'Manager' role, sending a crafted request to any workspace. This issue indicates that a previous fix was not effective in mitigating the vulnerability.

A path traversal vulnerability in mintplex-labs/anything-llm allowed a manager to bypass the `normalizePath()` function, intended to defend against path traversal attacks. This vulnerability enables the manager to read, delete, or overwrite the 'anythingllm.db' database file and other files stored in the 'storage' directory, such as internal communication keys and .env secrets. Exploitation of this vulnerability could lead to application compromise, denial of service (DoS) attacks, and unauthorized admin account takeover. The issue stems from improper validation of user-supplied input in the process of setting a custom logo for the app, which can be manipulated to achieve arbitrary file read, deletion, or overwrite, and to execute a DoS attack by deleting critical files required for the application's operation.

A Cross-Site Scripting (XSS) vulnerability exists in mintplex-labs/anything-llm, affecting both the desktop application version 1.2.0 and the latest version of the web application. The vulnerability arises from the application's feature to fetch and embed content from websites into workspaces, which can be exploited to execute arbitrary JavaScript code. In the desktop application, this flaw can be escalated to Remote Code Execution (RCE) due to insecure application settings, specifically the enabling of 'nodeIntegration' and the disabling of 'contextIsolation' in Electron's webPreferences. The issue has been addressed in version 1.4.2 of the desktop application.

mintplex-labs/anything-llm is affected by an uncontrolled resource consumption vulnerability in its upload file endpoint, leading to a denial of service (DOS) condition. Specifically, the server can be shut down by sending an invalid upload request. An attacker with the ability to upload documents can exploit this vulnerability to cause a DOS condition by manipulating the upload request.

In mintplex-labs/anything-llm, a vulnerability exists in the thread update process that allows users with Default or Manager roles to escalate their privileges to Administrator. The issue arises from improper input validation when handling HTTP POST requests to the endpoint `/workspace/:slug/thread/:threadSlug/update`. Specifically, the application fails to validate or check user input before passing it to the `workspace_thread` Prisma model for execution. This oversight allows attackers to craft a Prisma relation query operation that manipulates the `users` model to change a user's role to admin. Successful exploitation grants attackers the highest level of user privileges, enabling them to see and perform all actions within the system.

A Server-Side Request Forgery (SSRF) vulnerability exists in the upload link feature of mintplex-labs/anything-llm. This feature, intended for users with manager or admin roles, processes uploaded links through an internal Collector API using a headless browser. An attacker can exploit this by hosting a malicious website and using it to perform actions such as internal port scanning, accessing internal web applications not exposed externally, and interacting with the Collector API. This interaction can lead to unauthorized actions such as arbitrary file deletion and limited Local File Inclusion (LFI), including accessing NGINX access logs which may contain sensitive information.

A stored Cross-Site Scripting (XSS) vulnerability exists in the mintplex-labs/anything-llm application, affecting versions up to and including the latest before 1.0.0. The vulnerability arises from the application's failure to properly sanitize and validate user-supplied URLs before embedding them into the application UI as external links with custom icons. Specifically, the application does not prevent the inclusion of 'javascript:' protocol payloads in URLs, which can be exploited by a user with manager role to execute arbitrary JavaScript code in the context of another user's session. This flaw can be leveraged to steal the admin's authorization token by crafting malicious URLs that, when clicked by the admin, send the token to an attacker-controlled server. The attacker can then use this token to perform unauthorized actions, escalate privileges to admin, or directly take over the admin account. The vulnerability is triggered when the malicious link is opened in a new tab using ei…

A JSON Injection vulnerability exists in the `mintplex-labs/anything-llm` application, specifically within the username parameter during the login process at the `/api/request-token` endpoint. The vulnerability arises from improper handling of values, allowing attackers to perform brute force attacks without prior knowledge of the username. Once the password is known, attackers can conduct blind attacks to ascertain the full username, significantly compromising system security.

mintplex-labs/anything-llm is vulnerable to multiple security issues due to improper input validation in several endpoints. An attacker can exploit these vulnerabilities to escalate privileges from a default user role to an admin role, read and delete arbitrary files on the system, and perform Server-Side Request Forgery (SSRF) attacks. The vulnerabilities are present in the `/request-token`, `/workspace/:slug/thread/:threadSlug/update`, `/system/remove-logo`, `/system/logo`, and collector's `/process` endpoints. These issues are due to the application's failure to properly validate user input before passing it to `prisma` functions and other critical operations. Affected versions include the latest version prior to 1.0.0.