Vulnerability · Published Jun 10, 2026 · Assigned by GitHub_M
CVE-2026-46703BoxLite: Path Traversal Vulnerability in boxlite Leads to Arbitrary File Write on the Host
Critical 9.6
In plain English
A critical-severity path traversal in boxlite from boxlite-ai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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. 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/boxlite-ai/boxlite/sdks/go | 0.9.0 | GHSA-f396-4rp4-7v2j |
| Go | github.com/boxlite-ai/boxlite/sdks/go | 0.9.0 | GO-2026-5344 |
| PyPI | boxlite | 0.9.0 | GHSA-f396-4rp4-7v2j |
| PyPI | boxlite | 0.9.0 | PYSEC-2026-298 |
| npm | @boxlite-ai/boxlite | 0.9.0 | GHSA-f396-4rp4-7v2j |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| boxlite-ai | boxlite | < 0.9.0 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
References
- https://github.com/boxlite-ai/boxlite/security/advisories/GHSA-f396-4rp4-7v2j x_refsource_CONFIRM
- https://github.com/boxlite-ai/boxlite/releases/tag/v0.9.0 x_refsource_MISC