CVE-2026-42337

MaxKB is an open-source AI assistant for enterprise. MaxKB 2.8.0 and prior are vulnerable to a broken access control vulnerability in the OSS file service URL fetch API chat/api/oss/geturl. The endpoint uses applicationid from the URL path without validating ownership, allowing attackers to perfo...

CVE-2026-39418

MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, sandbox network protection can be bypassed by using socket.sendto with the MSGFASTOPEN flag. This allows authenticated user with tool-editing permissions to reach internal services that are explicitly blocked by the...

CVE-2026-39426 MaxKB: Stored XSS via Unsanitized iframe_render Parsing

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain a Stored Cross-Site Scripting XSS vulnerability where the frontend's MdRenderer.vue component parses custom tags from LLM responses or Application Prologue configurations, bypassing standard Markdown sanitizatio...

CVE-2026-39423

Summary (CVE-2026-39423) MaxKB (enterprise open‑source) × affected version: 2.7.1 and earlier. A vulnerability in the Markdown rendering engine enables an Eval Injection that lets any user in the AI chat interface execute arbitrary JavaScript in other users’ browsers, including administrators, le...