CVE-2026-46703
CriticalCVSS 9.6Exploitation Probability (EPSS)
Low risk39th percentile - higher than 39% of all known CVEs
Summary
Vulnerability in Boxlite before version 0.9.0. Users can specify OCI images, and when processing tar entries, symlinks to absolute paths are not checked. An attacker can host a malicious image on DockerHub, allowing arbitrary file writes on the host and remote code execution.
Risk Assessment
Risk of remote code execution on the host and full system compromise via a malicious OCI image.
Recommendation
Upgrade Boxlite to version 0.9.0 or later, which includes the fix.
Original NVD description (English source)
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.