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CVE-2026-46703

BoxLite: Path Traversal Vulnerability in boxlite Leads to Arbitrary File Write on the Host

Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers within them to run untrusted code. Prior to version 0.9.0, Boxlite allows users to specify the OCI image used by containers in the sandbox. However, when processing tar entries in OCI images, Boxlite does not account for the possibility that entries may be symlinks pointing to absolute paths. An attacker can craft a malicious OCI image and distribute it on image hosting platforms such as DockerHub, tricking users into using it. Once a user loads the malicious image, the attacker can write arbitrary content to any path on the host, which can further lead to remote code execution on the host. This issue has been patched in version 0.9.0.

CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed
Vendors
Boxlite-ai
Products
Boxlite
CVE-2026-46695

BoxLite: Permission Bypass in boxlite Allows Modification of Read-Only Files

Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers within them to run untrusted code. Prior to version 0.9.0, Boxlite does not restrict the kernel capabilities available inside the container, malicious code can remount the directory in rw mode, thereby gaining write access to that directory. This allows malicious code to perform arbitrary write operations on directories that should be read-only. This issue has been patched in version 0.9.0.

CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed
Vendors
Boxlite-ai
Products
Boxlite
CVE-2026-47213

BoxLite: Timeout Bypass Vulnerability

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.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Boxlite-ai
Products
Boxlite