CVE-2026-42337
MaxKB: Broken Access Control in MaxKB OSS URL Fetch API
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
12th
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.
| CWE | CWE-862 |
| Vendor | 1panel-dev |
| Product | maxkb |
| Published | May 26, 2026 |
| Last Updated | May 27, 2026 |
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Affected Versions
1Panel-dev / MaxKB
< 2.8.1