What’s Vulnerable › Vulnerabilities
CVE-2026-42337: MaxKB: Broken Access Control in MaxKB OSS URL Fetch API
- Severity: medium (CVSS 5.3 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-26 · updated 2026-07-23
- Weakness: CWE-862
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
- 1Panel-dev MaxKB: before 2.8.1
References
Get alerted when CVE-2026-42337 or the next vulnerability affects your stack