diff --git a/scripts/osv_scan.sh b/scripts/osv_scan.sh
index 784b9c8..9d31583 100644
--- a/scripts/osv_scan.sh
+++ b/scripts/osv_scan.sh
@@ -12,44 +12,31 @@ echo "Running OSV-Scanner recursively..."
 OSV_JSON="$(mktemp)"
 trap 'rm -f "$OSV_JSON"' EXIT
 
-osv-scanner --recursive ./ --format json > "$OSV_JSON"
+osv-scanner --recursive ./ --format json > "$OSV_JSON" || true
 
-python - <<'PY'
-import json, sys
-from pathlib import Path
+if ! command -v jq >/dev/null 2>&1; then
+    echo "Error: jq is not installed. Please install jq to parse OSV results."
+    exit 1
+fi
 
-path = Path("$OSV_JSON")
-data = json.loads(path.read_text()) if path.exists() else {}
+VULNS=$(jq -r '
+  .results[]? |
+  .source as $src |
+  .vulns[]? |
+  select(
+    (.database_specific.severity // "" | ascii_upcase | test("HIGH|CRITICAL")) or
+    (.severity[]?.score // "" | tostring | split("/")[0] | tonumber? // 0 | . >= 7.0)
+  ) |
+  "\(.id) (source: \($src))"
+' "$OSV_JSON")
 
-def is_high_or_critical(vuln):
-    sev_label = str(vuln.get("database_specific", {}).get("severity", "")).upper()
-    if sev_label in {"HIGH", "CRITICAL"}:
-        return True
-    for sev in vuln.get("severity", []):
-        score = sev.get("score", "")
-        try:
-            val = float(str(score).split("/")[0])
-            if val >= 9.0:
-                return True  # treat >=9 as critical
-            if val >= 7.0:
-                return True  # high
-        except Exception:
-            continue
-    return False
-
-highs = []
-for res in data.get("results", []):
-    source = res.get("source", "unknown")
-    for vuln in res.get("vulns", []):
-        if is_high_or_critical(vuln):
-            highs.append((source, vuln.get("id", "unknown")))
-
-if highs:
-    print("OSV scan found HIGH/CRITICAL vulnerabilities:")
-    for source, vid in highs:
-        print(f" - {vid} (source: {source})")
-    sys.exit(1)
-else:
-    print("OSV scan: no HIGH/CRITICAL vulnerabilities found.")
-PY
+if [ -n "$VULNS" ]; then
+    echo "OSV scan found HIGH/CRITICAL vulnerabilities:"
+    echo "$VULNS" | while IFS= read -r line; do
+        echo " - $line"
+    done
+    exit 1
+else
+    echo "OSV scan: no HIGH/CRITICAL vulnerabilities found."
+fi