CVE-2026-56779

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

Published Jun 25, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Maxkb
Maxkb maxkb
CPEs cpe:2.3:a:maxkb:maxkb:*:*:*:*:*:*:*:*
Vendors & Products Maxkb
Maxkb maxkb
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared 1panel
1panel maxkb
Vendors & Products 1panel
1panel maxkb
Type Values Removed Values Added
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.
Title MaxKB < 2.10.0 - Server-Side Request Forgery via downloadCallbackUrl and download_url Parameters
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 8, 2026, 2:06 PM
Reserved
Jun 23, 2026, 1:22 AM
Status
Deferred
Published
Jun 25, 2026, 7:16 PM
Modified
Oct 25, 2026, 10:10 PM