CVE 6.5 MEDIUM

BoxLite: Timeout Bypass Vulnerability_CVE-2026-47213

6.5 / 10
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers within them to run untrusted code. In versions 0.8.2 and prior, Boxlite allows users to configure a timeout for services running inside the virtual machine. When the timeout is triggered, Boxlite sends a signal to kill the process. However, instead of using the uncatchable SIGKILL signal, Boxlite uses the catchable SIGALRM signal. Malicious code running inside the sandbox can exploit this vulnerability to continue running after the timeout is triggered, leading to resource exhaustion within the virtual machine and affecting the availability of the Boxlite service. This issue has been patched via commit 28159fc.

Basic Information

ID CVE-2026-47213
Source GitHub_M
Published Jun 10, 2026 at 22:20

Affected Product

Vendor boxlite-ai
Product boxlite
Version <= 0.8.2
Affected Versions boxlite-ai boxlite <= 0.8.2

CWE Classification

References

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