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OpenAdvisories
Medium · 5.3 CVE-2026-42337 EUVD-2026-31988

MaxKB: Broken Access Control in MaxKB OSS URL Fetch API

Published May 26, 2026 · Updated May 27, 2026 · Assigned by GitHub_M

Description

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/get_url). The endpoint uses application_id from the URL path without validating ownership, allowing attackers to perform operations under other applications’ policies. This vulnerability is fixed in 2.8.1.

Affected products

VendorProductAffectedFixed
1Panel-dev MaxKB < 2.8.1 —

References