CVE-2026-77523

MaxKB: Cross-workspace model parameter form write

Published 21 Sep 2026 • Updated 21 Sep 2026

Severity: HIGH

Description

MaxKB is an open-source AI assistant for enterprise. In version 2.10.3-lts and earlier, the model parameter form route authorizes the path workspace but ModelSerializer.ModelParams loads and saves a Model by id alone without including workspace_id in the query. An authenticated user with model read permission in an attacker-controlled workspace can supply a known victim model_id to read or overwrite the victim's model_params_form in another workspace, potentially altering workflows that use those defaults. 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

References (1)

• https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-g888-8cvh-9284