CVE-2026-79918

MEDIUM 6.3

MaxKB: Sandbox escape via unhooked fexecve

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

MaxKB is an open-source AI assistant for enterprise. Prior to version 2.10.6-lts, the ToolExecutor LD_PRELOAD sandbox hooks execve, execvpe, and execveat to prevent subprocess creation but does not hook fexecve. An authenticated attacker able to execute tool code can call fexecve to start a process outside the sandbox's intended subprocess policy. This issue is fixed in version 2.10.6-lts.

CWE	CWE-693
Vendor	1panel-dev
Product	maxkb
Published	Sep 21, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

1Panel-dev / MaxKB

< 2.10.6-lts

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-9mh9-v949-fwqh github.com: https://github.com/1Panel-dev/MaxKB/commit/6fa7947a85030b87977c4026f33af11ca10dd1e6 github.com: https://github.com/1Panel-dev/MaxKB/releases/tag/v2.10.6-lts