CVE-2026-66750

The record

Let's Chat 0.3.0 through 0.4.8 contains a broken access control vulnerability that allows authenticated attackers to download file attachments from private and password-protected rooms they are not a member of by exploiting missing room membership checks in the file retrieval route. Attackers can enumerate adjacent MongoDB ObjectIds derived from a known file ID to recover files uploaded by other users, as the GET /files/:id/:name route in app/controllers/files.js only enforces login authentication without consulting room membership or the Room.canJoin check.

Affected packages

Related vulnerabilities

• CVE-2026-55147 LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application… CWE-862
• CVE-2026-55146 LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application… CWE-862
• CVE-2026-62967 ZTNET is a ZeroTier web UI for private controllers with multiuser and organization… CWE-862
• CVE-2026-62989 Shopper is a Headless e-commerce Admin Panel. CWE-862
• CVE-2026-78403 Stack-based buffer overflow and missing authorization vulnerability in Thales Sentinel… CWE-862
• CVE-2026-62301 MyTube is a self-hosted downloader and player for several video websites. CWE-862
• CVE-2026-119337 RAGFlow is an open-source RAG (Retrieval-Augmented Generation) engine. CWE-862
• CVE-2026-116245 libpq looks a connection service up in the service file of the operating-system account… CWE-862