CVE-2026-56779: 1panel-Dev Maxkb

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

MaxKB before 2.10.0 contains a server-side request forgery vulnerability in tool creation and update endpoints that allows authenticated users to make arbitrary server requests by supplying unvalidated downloadCallbackUrl and download_url parameters. Attackers with default workspace USER role can exploit this to access internal network services by providing malicious URLs to the ToolSerializer endpoints.

Affected products

• 1panel-Dev Maxkb: before 2.10.0 (fixed in 2.10.0)

Published 2026-06-25. Last modified 2026-07-14.