CVE-2026-30821: Unrestricted Upload of File with Dangerous Type

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.0.13, the /api/v1/attachments/:chatflowId/:chatId endpoint is listed in WHITELISTURLS, allowing unauthenticated access to the file upload API. While the server validates uploads based on th...