Vulnerability · Published Sep 21, 2026 · Assigned by GitHub_M

CVE-2026-79918MaxKB: Sandbox escape via unhooked fexecve

Medium 6.3

In plain English

A medium-severity security flaw in MaxKB from 1Panel-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.4%top 69.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
1Panel-dev	MaxKB	< 2.10.6-lts

Weakness: CWE-693 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

References

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