CVE-2025-66446: MaxKB has a Python sandbox LD_PRELOAD bypass

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-11 · updated 2026-10-07
Weakness: CWE-362

Description

MaxKB is an open-source AI assistant for enterprise. Versions 2.3.1 and below have improper file permissions which allow attackers to overwrite the built-in dynamic linker and other critical files, potentially resulting in privilege escalation. This issue is fixed in version 2.4.0.

Affected products

1Panel-dev MaxKB: before 2.4.0 — fixed in 2.4.0

How to fix

Upgrade to a fixed version: 1Panel-dev MaxKB 2.4.0. Check the vendor advisory for mitigations.

References

https://github.com/1Panel-dev/MaxKB/releases/tag/v2.4.0
https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-5xx2-3q9w-jpgf

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