CVE-2026-56779

MEDIUM 6.4

MaxKB < 2.10.0 - Server-Side Request Forgery via downloadCallbackUrl and download_url Parameters

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	1panel-dev
Product	maxkb
Published	Jun 25, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

1Panel-dev / MaxKB

0 < 2.10.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/1Panel-dev/MaxKB/issues/6272 github.com: https://github.com/1Panel-dev/MaxKB/commit/6c156afc656afa62ea4280e504a06ac1c9696b36 vulncheck.com: https://www.vulncheck.com/advisories/maxkb-server-side-request-forgery-via-downloadcallbackurl-and-download-url-parameters

Credits

George Chen