CVE-2026-77517

MaxKB cross-knowledge IDOR lets a normal user read and modify documents and paragraphs in another knowledge base

Published 21 Sep 2026 • Updated 21 Sep 2026

Severity: MEDIUM

Description

MaxKB is an open-source AI assistant for enterprise. From version 2.0.0 through 2.10.2-lts, document and paragraph operate routes authorize only knowledge_id in the request path, then query the target Document by document_id or Paragraph by paragraph_id without confirming that the object belongs to that knowledge base. A normal workspace user with a known victim document or paragraph UUID can use an attacker-owned knowledge-base path to read or modify content in another user's knowledge base. No fixed version is available as of this review.

Affected products (1)

• 1Panel-dev MaxKB

Problem types

• CWE-639: Authorization Bypass Through User-Controlled Key
• CWE-862: Missing Authorization

References (1)

• https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-58cm-c5jq-96vf