LoLLMs (Lord of Large Language Multimodal Systems) Web UI 13

A vulnerability in parisneo/lollms-webui v13 arises from the server's handling of multipart boundaries in file uploads. The server does not limit or validate the length of the boundary or the characters appended to it, allowing an attacker to craft requests with excessively long boundaries, leading to resource exhaustion and eventual denial of service (DoS). Despite an attempted patch in commit 483431bb, which blocked hyphen characters from being appended to the multipart boundary, the fix is insufficient. The server remains vulnerable if other characters (e.g., '4', 'a') are used instead of hyphens. This allows attackers to exploit the vulnerability using different characters, causing resource exhaustion and service unavailability.

Published: 2025-03-20T10:10:49.648Z
Updated: 2025-10-15T12:50:05.646Z

A missing authentication check in the uninstall endpoint of parisneo/lollms-webui V13 allows attackers to perform unauthorized directory deletions. The /uninstall/{app_name} API endpoint does not call the check_access() function to verify the client_id, enabling attackers to delete directories without proper authentication.

Published: 2025-03-20T10:09:56.293Z
Updated: 2025-10-15T12:50:47.693Z

parisneo/lollms-webui version V13 (feather) suffers from a Server-Side Request Forgery (SSRF) vulnerability in the `POST /api/proxy` REST API. Attackers can exploit this vulnerability to abuse the victim server's credentials to access unauthorized web resources by specifying the JSON parameter `{"url":"http://steal.target"}`. Existing security mechanisms such as `forbid_remote_access(lollmsElfServer)`, `lollmsElfServer.config.headless_server_mode`, and `check_access(lollmsElfServer, request.client_id)` do not protect against this vulnerability.

Published: 2025-03-20T10:11:20.626Z
Updated: 2025-03-20T13:08:13.183Z