CVE-2026-56779CWE-918

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

Medium · published June 25, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
20.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
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
EPSS
0.00294 · 20.9th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-06-25T18:11Z
EPSS history
Timeline
  • 25 JUN 18:11Z
    MaxKB < 2.10.0 - Server-Side Request Forgery via downloadCallbackUrl and download_url Parameters
    cvelistv5