BoxLite: Timeout Bypass Vulnerability
CVE-2026-47213

6.5MEDIUM

Key Information:

Vendor

Boxlite-ai

Status
Boxlite
Vendor
CVE Published:
10 June 2026

What is CVE-2026-47213?

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.

Affected Version(s)

boxlite <= 0.8.2

References

https://github.com/boxlite-ai/boxlite/security/advisories...
x_refsource_CONFIRM
https://github.com/boxlite-ai/boxlite/commit/28159fc5b6b6...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.