feat: add CVE vulnerability checks with pip-audit

Makefile

@@ -147,6 +147,7 @@ type-check-voice:
 # Installation targets
 install-dev:
 	python -m pip install --upgrade pip
+	python -m pip install pip-audit
 	python -m pip install -e sdk/rt[dev]
 	python -m pip install -e sdk/batch[dev]
 	python -m pip install -e sdk/flow[dev]

tests/test_cve.py

@@ -0,0 +1,71 @@
+import json
+import subprocess
+
+
+def test_no_known_cve_vulnerabilities():
+    """Check all installed packages for known CVE vulnerabilities using pip-audit.
+
+    - runs pip-audit against the local environment
+    - parses JSON output for any reported vulnerabilities
+    - prints a detailed report and actionable summary
+    - fails if any CVEs are found
+    """
+    result = subprocess.run(
+        ["pip-audit", "-f", "json", "-l", "--progress-spinner", "off"],
+        capture_output=True,
+        text=True,
+        timeout=120,
+    )
+
+    audit = json.loads(result.stdout)
+    dependencies = audit.get("dependencies", [])
+
+    # Collect vulnerabilities grouped by package
+    affected_packages: dict[str, dict] = {}
+    total_cves = 0
+    for dep in dependencies:
+        vulns = dep.get("vulns", [])
+        if not vulns:
+            continue
+        name = dep["name"]
+        version = dep["version"]
+        if name not in affected_packages:
+            affected_packages[name] = {"version": version, "vulns": [], "fix_versions": set()}
+        for vuln in vulns:
+            affected_packages[name]["vulns"].append(vuln)
+            affected_packages[name]["fix_versions"].update(vuln.get("fix_versions", []))
+            total_cves += 1
+
+    if not affected_packages:
+        return
+
+    # Build the report
+    lines = [f"Found {total_cves} known CVE(s) in {len(affected_packages)} package(s).", ""]
+
+    # Detailed report per package
+    lines.append("REPORT")
+    lines.append("-" * 60)
+    for name, info in sorted(affected_packages.items()):
+        lines.append(f"  {name}=={info['version']}  ({len(info['vulns'])} CVE(s))")
+        for vuln in info["vulns"]:
+            fix = ", ".join(vuln.get("fix_versions", [])) or "no fix available"
+            desc = vuln.get("description", "")
+            summary = desc.split("\n")[0][:120] if desc else "no description"
+            cve_url = f"https://nvd.nist.gov/vuln/detail/{vuln['id']}"
+            lines.append(f"    - {vuln['id']}  fix: {fix}")
+            lines.append(f"      {cve_url}")
+            lines.append(f"      {summary}")
+        lines.append("")
+
+    # Actionable summary
+    lines.append("ACTION REQUIRED")
+    lines.append("-" * 60)
+    for name, info in sorted(affected_packages.items()):
+        fix_versions = sorted(info["fix_versions"])
+        if fix_versions:
+            lines.append(f"  pip install --upgrade {name}>={fix_versions[-1]}")
+        else:
+            lines.append(f"  {name}=={info['version']}: no fix available — consider replacing this dependency")
+
+    report = "\n".join(lines)
+    assert not affected_packages, report