CVE-2026-77521 MaxKB - Command Injection

MaxKB prior to 2.10.5-lts contains a command injection caused by exposed execute shell tool in SandboxShellBackend without proper restrictions, letting untrusted content cause command execution without human approval, exploit requires untrusted input.

CVSS base score 10.0 /10
Critical
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
1.05% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
21 September 2026
Updated
15 October 2026
Weakness
CWE-78

Vendor fix

Update to version 2.10.5-lts or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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