CVE-2026-56779

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.

CVSS v4.0

5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

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

EPSS

0.29% chance of exploitation in the next 30 days, 22th percentile

Published

2026-06-25

Updated

2026-07-28

Proof-of-concept exploits (1)

• 1Panel-dev/MaxKB/issues/6272

References

• CVE Record
• NVD entry

Related

• CVE-2023-37477
• CVE-2023-37916
• CVE-2023-37917
• CVE-2023-39964
• CVE-2023-39965
• CVE-2023-39966