CVE-2026-56779

Medium

Description

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.

SeverityMedium

CVSS6.4

Exploit probability—

ProductMaxKB

PublishedJun 25, 2026

First seenJun 25, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

1Panel-dev MaxKB2.10.0 or later

Patches

github.com/1Panel-dev/MaxKB/commit/6c156afc656afa62ea4280e504a06ac1c9696b36

Affected products

Product	Affected versions	Fixed in
1Panel-dev MaxKB	v < 2.10.0	2.10.0

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