CVE-2026-56779

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

MEDIUM
6.4
CVSS Score
Published: June 25, 2026 at 06:11 PM UTC
Updated: October 25, 2026 at 10:10 PM UTC
2 products affected across 2 vendorsMaxkbMaxKB

Using MaxKB by 1Panel-dev?

Get instant alerts when new vulnerabilities affect MaxKB - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.4
Exploit prediction
EPSS 0.3%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.10.0
Affected range stops below 2.10.0, so it looks safe — our inference, not a vendor statement
v < 2.10.0
Affected range stops below 2.10.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.4MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-918

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card