Path Traversal in boxlite (CVE-2026-46703)
Summary
Path traversal in boxlite (CVE-2026-46703). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 0.9.0 or later.
Original description
The description as published by the 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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-46703 has been found in boxlite.
Successful exploitation can lead to full system takeover. CVSS score: 9.6/10.
What to do: upgrade boxlite to 0.9.0 or later.
If unsure, ask your IT team or search "boxlite CVE-2026-46703" on the vendor's site.
CVE-2026-46703 (boxlite) — CWE-22 / CVSS v3 9.6
Attack vector: remote (network-reachable) / unauthenticated
Patched: 0.9.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Path traversal (CWE-22) exists in boxlite.
Check the vendor advisory for the affected versions of boxlite.
Severity: Critical (CVSS 9.6/10). Successful exploitation can lead to full system takeover.
Update to 0.9.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'boxlite' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'boxlite' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
boxliteを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade boxlite to 0.9.0ステージング環境で 0.9.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory rustsec.org
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package crates.io
- package github.com
- package pypi.org
- web github.com
- web github.com
- web github.com
- web github.com