CVE-2026-46703 BoxLite: Path Traversal Vulnerability in boxlite Leads to Arbitrary File Write on the Host
Attackers can write arbitrary files to the host via malicious OCI images, potentially leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-46703?
CVE-2026-46703 is a critical path traversal vulnerability in boxlite-ai boxlite, published on 10 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Weakness: CWE-22
Which versions are affected by CVE-2026-46703?
13 open source packages ship an affected version, including github.com/boxlite-ai/boxlite/sdks/go, boxlite and boxlite-cli.
| Package | Affected | Fixed in |
|---|---|---|
github.com/boxlite-ai/boxlite/sdks/go Go | All versions | 0.9.0 |
github.com/boxlite-ai/boxlite/sdks/go Go | All versions | 0.9.0 |
github.com/boxlite-ai/boxlite/sdks/go Go | All versions | 0.9.0 |
boxlite PyPI | All versions | 0.9.0 |
boxlite PyPI | All versions | 0.9.0 |
boxlite PyPI | All versions | 0.9.0 |
7 more packages
boxlite crates.io | All versions | 0.9.0 |
boxlite crates.io | All versions | 0.9.0 |
boxlite crates.io | From 0.0.0-0 | 0.9.0 |
boxlite-cli crates.io | All versions | 0.9.0 |
boxlite-cli crates.io | All versions | 0.9.0 |
@boxlite-ai/boxlite npm | All versions | 0.9.0 |
@boxlite-ai/boxlite npm | All versions | 0.9.0 |
How do I fix CVE-2026-46703?
Upgrade github.com/boxlite-ai/boxlite/sdks/go to 0.9.0 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-46703 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46703 exists.
Sources
Also known as GHSA-f396-4rp4-7v2j, GO-2026-5344, PYSEC-2026-298, RUSTSEC-2026-0148.