Path Traversal in boxlite (CVE-2026-46703)

Summary

path traversal in boxlite (CVE-2026-46703). Successful exploitation can lead to full system takeover. Exploitable via ``apply_oci_layer``. Mitigation: upgrade to `0.9.0` or later.

AI summary snake-internal / snake-material-v2

A vulnerability tracked as **CVE-2026-46703** has been found in boxlite. Attackers can target a specific entry point like ``apply_oci_layer`` over the network to misuse the product. 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 Attack surface: `apply_oci_layer` / `full_path` / `normalize_entry_path` / `dest` 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.

❓ What is the problem

**Path traversal** (CWE-22) exists in boxlite. Attackers reach the vulnerable code path via ``apply_oci_layer`` without authentication.

📍 Affected scope

boxlite — . Attack surface: `apply_oci_layer` / `full_path` / `normalize_entry_path` / `dest`.

🔥 Severity

Severity: Critical (CVSS 9.6/10). Successful exploitation can lead to full system takeover

🔧 How to fix

Update to **0.9.0**.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

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 (7 steps)

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify 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。
6
Apply 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
7
Post-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 Step 3 と同じログクエリでアラート再発が無いか継続監視。