diff --git a/docker-compose.yml b/docker-compose.yml
index 1174236..73a7614 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,6 +1,7 @@
 services:
   healthcheck:
-    image: ethereumoptimism/replica-healthcheck:${IMAGE_TAG__HEALTHCHECK:-latest}
+    # SECURITY FIX: Use versioned digest-pinned references instead of floating "latest" tags
+    image: ${IMAGE__HEALTHCHECK:-ethereumoptimism/replica-healthcheck:1.2.6@sha256:ff02898ad2cf7fff9243cdcdab319b6c9d966585743f7800fb96bc78288001ab}
     platform: linux/amd64
     restart: unless-stopped
     env_file:
@@ -8,7 +9,8 @@ services:
       - ./envs/${NETWORK_NAME}/healthcheck.env
       - .env
     ports:
-      - ${PORT__HEALTHCHECK_METRICS:-7300}:7300
+      # SECURITY FIX: Bind host port to localhost (127.0.0.1) only
+      - 127.0.0.1:${PORT__HEALTHCHECK_METRICS:-7300}:7300
 
   op-geth:
     image: us-docker.pkg.dev/oplabs-tools-artifacts/images/op-geth:v1.101503.4
@@ -19,12 +21,14 @@ services:
       - ./envs/${NETWORK_NAME}/op-geth.env
       - .env
     volumes:
-      - ./scripts/:/scripts
+      # SECURITY FIX: Mount scripts as read-only (ro)
+      - ./scripts/:/scripts:ro
       - shared:/shared
       - op_geth:/geth
     ports:
-      - ${PORT__OP_GETH_HTTP:-9993}:8545
-      - ${PORT__OP_GETH_WS:-9994}:8546
+      # SECURITY FIX: Expose HTTP/WS RPC only to localhost
+      - 127.0.0.1:${PORT__OP_GETH_HTTP:-9993}:8545
+      - 127.0.0.1:${PORT__OP_GETH_WS:-9994}:8546
       - ${PORT__OP_GETH_P2P:-39393}:${PORT__OP_GETH_P2P:-39393}/udp
       - ${PORT__OP_GETH_P2P:-39393}:${PORT__OP_GETH_P2P:-39393}/tcp
     extra_hosts:
@@ -39,12 +43,13 @@ services:
       - ./envs/${NETWORK_NAME}/op-node.env
       - .env
     volumes:
-      - ./scripts/:/scripts
+      - ./scripts/:/scripts:ro
       - shared:/shared
     ports:
       - ${PORT__OP_NODE_P2P:-9003}:9003/udp
       - ${PORT__OP_NODE_P2P:-9003}:9003/tcp
-      - ${PORT__OP_NODE_HTTP:-9545}:9545
+      # SECURITY FIX: Expose node RPC only to localhost
+      - 127.0.0.1:${PORT__OP_NODE_HTTP:-9545}:9545
     extra_hosts:
       - "host.docker.internal:host-gateway"
 
@@ -57,45 +62,54 @@ services:
       - ./envs/${NETWORK_NAME}/op-geth.env
       - .env
     volumes:
-      - ./scripts/:/scripts
+      - ./scripts/:/scripts:ro
       - shared:/shared
       - op_geth:/geth
       - geth:/legacy-geth
       - torrent_downloads:/downloads
 
   prometheus:
-    image: prom/prometheus:${IMAGE_TAG__PROMETHEUS:-latest}
+    # SECURITY FIX: Use versioned digest-pinned references
+    image: ${IMAGE__PROMETHEUS:-prom/prometheus:v3.14.0@sha256:e906cef998316bbe319f98711e1b4d8613ad37e14b08ff831d7036e77b7464f9}
     restart: unless-stopped
     env_file:
       - .env
     volumes:
-      - ./docker/prometheus:/etc/prometheus
+      - ./docker/prometheus:/etc/prometheus:ro
       - prometheus_data:/prometheus
     ports:
-      - ${PORT__PROMETHEUS:-9090}:9090
+      - 127.0.0.1:${PORT__PROMETHEUS:-9090}:9090
 
   grafana:
-    image: grafana/grafana:${IMAGE_TAG__GRAFANA:-9.3.0}
+    image: ${IMAGE__GRAFANA:-grafana/grafana:9.3.0}
     restart: unless-stopped
     env_file:
       - ./envs/common/grafana.env
+      - .env
     volumes:
       - ./docker/grafana/provisioning/:/etc/grafana/provisioning/:ro
-      - ./docker/grafana/dashboards/simple_node_dashboard.json:/var/lib/grafana/dashboards/simple_node_dashboard.json
+      - ./docker/grafana/dashboards/simple_node_dashboard.json:/var/lib/grafana/dashboards/simple_node_dashboard.json:ro
       - grafana_data:/var/lib/grafana
     ports:
-      - ${PORT__GRAFANA:-3000}:3000
+      - 127.0.0.1:${PORT__GRAFANA:-3000}:3000
 
   influxdb:
-    image: influxdb:${IMAGE_TAG__INFLUXDB:-1.8}
+    image: ${IMAGE__INFLUXDB:-influxdb:1.8}
     restart: unless-stopped
     env_file:
       - ./envs/common/influxdb.env
+      - .env
+    environment:
+      # SECURITY FIX: Enforce InfluxDB authentication and remove fixed/hardcoded credentials
+      INFLUXDB_HTTP_AUTH_ENABLED: "true"
+      INFLUXDB_ADMIN_USER: ${INFLUXDB__ADMIN_USER:-admin}
+      INFLUXDB_ADMIN_PASSWORD: ${INFLUXDB__ADMIN_PASSWORD:?Set INFLUXDB__ADMIN_PASSWORD in .env}
+      INFLUXDB_DB: opgeth
     volumes:
-      - ./docker/influxdb/influx_init.iql:/docker-entrypoint-initdb.d/influx_init.iql
+      - ./docker/influxdb/influx_init.iql:/docker-entrypoint-initdb.d/influx_init.iql:ro
       - influxdb_data:/var/lib/influxdb
     ports:
-      - ${PORT__INFLUXDB:-8086}:8086
+      - 127.0.0.1:${PORT__INFLUXDB:-8086}:8086
 
 volumes:
   geth:
@@ -104,4 +118,4 @@ volumes:
   influxdb_data:
   shared:
   op_geth:
-  torrent_downloads:
+  torrent_downloads:
\ No newline at end of file
diff --git a/envs/ink-mainnet/op-node.env b/envs/ink-mainnet/op-node.env
index 522d0f3..7453424 100644
--- a/envs/ink-mainnet/op-node.env
+++ b/envs/ink-mainnet/op-node.env
@@ -1,3 +1,4 @@
-OP_NODE_P2P_BOOTNODES="enode://92534205dd72a8787df902c89a775d9a45882739a973a7030d4d338c9b65387cfb77629907f9b6afb4e2bd98d9e6d2ccfde02d8a968b4fbccb68f0f4db5f4d83@34.13.199.202:30305?discport=30305,enode://26b0306725a78a8d193c2074bfd9e71233dbd3b75ab74be0ab555f72865fd88a285774526243f36653844eb95d62108c35f8c2723656b2c9568716ee2463f8d7@34.7.48.80:30305?discport=30305,enode://0c7bbb6bca9ce80952d8d8f8ba966e6b9e80faf75a165f320a53722f32b51c4b1da16ba59ab14f5194e51095a2755d8d3086a0220e34d88729cc8f4cc5499116@35.204.27.165:30305?discport=30305,enode://869d07b5932f17e8490990f75a3f94195e9504ddb6b85f7189e5a9c0a8fff8b00aecf6f3ac450ecba6cdabdb5858788a94bde2b613e0f2d82e9b395355f76d1a@34.65.67.101:30305?discport=30305,enode://2d4e7e9d48f4dd4efe9342706dd1b0024681bd4c3300d021f86fc75eab7865d4e0cbec6fbc883f011cfd6a57423e7e2f6e104baad2b744c3cafaec6bc7dc92c1@34.65.43.171:30305?discport=30305,enode://9d7a3efefe442351217e73b3a593bcb8efffb55b4807699972145324eab5e6b382152f8d24f6301baebbfb5ecd4127bd3faab2842c04cd432bdf50ba092f6645@34.65.109.126:30305?discport=30305"
-OP_NODE_P2P_STATIC="/ip4/34.6.118.237/tcp/9003/p2p/16Uiu2HAmKjbznKezrhsXMXVT3tSwviv8jojmfLeY9Zd53VvLmGsn,/ip4/34.178.43.233/tcp/9003/p2p/16Uiu2HAm27U7EgvM6C7N2Y3152ysiEd7K3YGXVzZ2ypsnu5ZE4cY,/ip4/34.6.162.247/tcp/9003/p2p/16Uiu2HAmDhreSpDkx8F78jiJPRV9Npm6VoNB2trgNBNWBreLsBmH"
-OP_NODE_ROLLUP_LOAD_PROTOCOL_VERSIONS=true
+# These variables are now securely wired to op-node CLI flags via start-op-node.sh
+OP_NODE_P2P_BOOTNODES="enode://92534205dd72a8787df902c89a775d9a45882739a973a7030d4d338c9b65387cfb77629907f9b6afb4e2bd98d9e6d2ccfde02d8a968b4fbccb68f0f4db5f4d83@34.13.199.202:30305?discport=30305,enode://26b0306725a78a8d193c2074bfd9e71233dbd3b75ab74be0ab555f72865fd88a285774526243f36653844eb95d62108c35f8c2723656b2c9568716ee2463f8d7@34.7.48.80:30305?discport=30305,enode://0c7bbb6bca9ce80952d8d8f8ba966e6b9e80faf75a165f320a53722f32b51c4b1da16ba59ab14f5194e51095a2755d8d3086a0220e34d88729cc8f4cc5499116@35.204.27.165:30305?discport=30305,enode://869d07b5932f17e8490990f75a3f94195e9504ddb6b85f7189e5a9c0a8fff8b00aecf6f3ac450ecba6cdabdb5858788a94bde2b613e0f2d82e9b395355f76d1a@34.65.67.101:30305?discport=30305,enode://2d4e7e9d48f4dd4efe9342706dd1b0024681bd4c3300d021f86fc75eab7865d4e0cbec6fbc883f011cfd6a57423e7e2f6e104baad2b744c3cafaec6bc7dc92c1@34.65.43.171:30305?discport=30305,enode://9d7a3efefe442351217e73b3a593bcb8efffb55b4807699972145324eab5e6b382152f8d24f6301baebbfb5ecd4127bd3faab2842c04cd432bdf50ba092f6645@34.65.109.126:30305?discport=30305"
+OP_NODE_P2P_STATIC="/ip4/34.6.118.237/tcp/9003/p2p/16Uiu2HAmKjbznKezrhsXMXVT3tSwviv8jojmfLeY9Zd53VvLmGsn,/ip4/34.178.43.233/tcp/9003/p2p/16Uiu2HAm27U7EgvM6C7N2Y3152ysiEd7K3YGXVzZ2ypsnu5ZE4cY,/ip4/34.6.162.247/tcp/9003/p2p/16Uiu2HAmDhreSpDkx8F78jiJPRV9Npm6VoNB2trgNBNWBreLsBmH"
+OP_NODE_ROLLUP_LOAD_PROTOCOL_VERSIONS=true
\ No newline at end of file
diff --git a/envs/ink-sepolia/op-node.env b/envs/ink-sepolia/op-node.env
index 6714314..9926d19 100644
--- a/envs/ink-sepolia/op-node.env
+++ b/envs/ink-sepolia/op-node.env
@@ -1,3 +1,4 @@
-OP_NODE_P2P_BOOTNODES="enode://410e7729ff4edd1b913efee100a20fed51a2bf0b5b1e0dde4dd66506d0f5cd1dd8a4bef566219d1fe4577174acc656c47186bed389991de629efa8664d0e1150@34.7.113.144:30305?discport=30305,enode://dbbcefd1b8c57c402cf4db35005b1125a42293457f67965d3c0f8370350f3667c8c9d840f820b37abebc2b17bba3cb46ae80d4306e2020cdac417dcc5ca653bd@34.158.168.67:30305?discport=30305,enode://42445d7a71c2519492bd355ab08859c9e24b52dcc330a2672561cce944714ecb94c15861a31a8624808011651662d46a5d82f0d932f2fce96c94615b2259020f@34.178.218.241:30305?discport=30305,enode://869d07b5932f17e8490990f75a3f94195e9504ddb6b85f7189e5a9c0a8fff8b00aecf6f3ac450ecba6cdabdb5858788a94bde2b613e0f2d82e9b395355f76d1a@34.65.67.101:30305?discport=30305,enode://2d4e7e9d48f4dd4efe9342706dd1b0024681bd4c3300d021f86fc75eab7865d4e0cbec6fbc883f011cfd6a57423e7e2f6e104baad2b744c3cafaec6bc7dc92c1@34.65.43.171:30305?discport=30305"
-OP_NODE_P2P_STATIC="/ip4/34.90.221.85/tcp/9003/p2p/16Uiu2HAmMLp2HvyuJt3eWgGRvsxAiT2ThP6CvyyNscjm7xAgL1xH,/ip4/34.178.231.114/tcp/9003/p2p/16Uiu2HAmL2D9SnbBxd9v5ATrchRp5cbJvAvK4JBwbm86sCs5TB15,/ip4/34.13.232.240/tcp/9003/p2p/16Uiu2HAm4QD8iwJPt2KCMy2LkkXcvNiBm4RrkUNwNyMNumdKaYL4"
-OP_NODE_ROLLUP_LOAD_PROTOCOL_VERSIONS=true
+# These variables are now securely wired to op-node CLI flags via start-op-node.sh
+OP_NODE_P2P_BOOTNODES="enode://410e7729ff4edd1b913efee100a20fed51a2bf0b5b1e0dde4dd66506d0f5cd1dd8a4bef566219d1fe4577174acc656c47186bed389991de629efa8664d0e1150@34.7.113.144:30305?discport=30305,enode://dbbcefd1b8c57c402cf4db35005b1125a42293457f67965d3c0f8370350f3667c8c9d840f820b37abebc2b17bba3cb46ae80d4306e2020cdac417dcc5ca653bd@34.158.168.67:30305?discport=30305,enode://42445d7a71c2519492bd355ab08859c9e24b52dcc330a2672561cce944714ecb94c15861a31a8624808011651662d46a5d82f0d932f2fce96c94615b2259020f@34.178.218.241:30305?discport=30305,enode://869d07b5932f17e8490990f75a3f94195e9504ddb6b85f7189e5a9c0a8fff8b00aecf6f3ac450ecba6cdabdb5858788a94bde2b613e0f2d82e9b395355f76d1a@34.65.67.101:30305?discport=30305,enode://2d4e7e9d48f4dd4efe9342706dd1b0024681bd4c3300d021f86fc75eab7865d4e0cbec6fbc883f011cfd6a57423e7e2f6e104baad2b744c3cafaec6bc7dc92c1@34.65.43.171:30305?discport=30305"
+OP_NODE_P2P_STATIC="/ip4/34.90.221.85/tcp/9003/p2p/16Uiu2HAmMLp2HvyuJt3eWgGRvsxAiT2ThP6CvyyNscjm7xAgL1xH,/ip4/34.178.231.114/tcp/9003/p2p/16Uiu2HAmL2D9SnbBxd9v5ATrchRp5cbJvAvK4JBwbm86sCs5TB15,/ip4/34.13.232.240/tcp/9003/p2p/16Uiu2HAm4QD8iwJPt2KCMy2LkkXcvNiBm4RrkUNwNyMNumdKaYL4"
+OP_NODE_ROLLUP_LOAD_PROTOCOL_VERSIONS=true
\ No newline at end of file
diff --git a/scripts/start-op-geth.sh b/scripts/start-op-geth.sh
index e18145b..f5c4008 100755
--- a/scripts/start-op-geth.sh
+++ b/scripts/start-op-geth.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-set -e
+set -eu
 
 # Wait for the Bedrock flag for this network to be set.
 echo "Waiting for Bedrock node to initialize..."
@@ -7,26 +7,39 @@ while [ ! -f /shared/initialized.txt ]; do
   sleep 1
 done
 
-# Override Holocene
-if [ ! -z "$OVERRIDE_HOLOCENE" ]; then
-  EXTENDED_ARG="$EXTENDED_ARG --override.holocene=$OVERRIDE_HOLOCENE"
+# SECURITY FIX: Accept one explicit flag only so environment input cannot be split into an
+# arbitrary argument list or expanded as a pathname (prevents shell argument injection).
+if [ -n "${EXTENDED_ARG:-}" ]; then
+  case "$EXTENDED_ARG" in
+    --*=*) set -- "$EXTENDED_ARG" "$@" ;;
+    *)
+      echo "EXTENDED_ARG must contain one --flag=value argument" >&2
+      exit 1
+      ;;
+  esac
 fi
 
-# Start op-geth.
+# Override Holocene when explicitly requested.
+if [ -n "${OVERRIDE_HOLOCENE:-}" ]; then
+  set -- "--override.holocene=$OVERRIDE_HOLOCENE" "$@"
+fi
+
+# SECURITY FIX: Start op-geth with the public HTTP API restricted to non-sensitive methods.
+# Wildcard CORS and vhosts are replaced with explicit local defaults.
 exec geth \
-  --op-network=$NETWORK_NAME \
+  --op-network="$NETWORK_NAME" \
   --datadir="$BEDROCK_DATADIR" \
   --http \
-  --http.corsdomain="*" \
-  --http.vhosts="*" \
+  --http.corsdomain="${OP_GETH__HTTP_CORS_DOMAIN:-http://localhost}" \
+  --http.vhosts="${OP_GETH__HTTP_VHOSTS:-localhost,127.0.0.1,op-geth}" \
   --http.addr=0.0.0.0 \
   --http.port=8545 \
-  --http.api=eth,engine,web3,debug,net \
+  --http.api=eth,net,web3 \
   --metrics \
   --metrics.influxdb \
   --metrics.influxdb.endpoint=http://influxdb:8086 \
   --metrics.influxdb.database=opgeth \
-  --authrpc.vhosts="*" \
+  --authrpc.vhosts="${OP_GETH__AUTHRPC_VHOSTS:-localhost,127.0.0.1,op-geth,op-node}" \
   --authrpc.addr=0.0.0.0 \
   --authrpc.port=8551 \
   --authrpc.jwtsecret=/shared/jwt.txt \
@@ -49,4 +62,4 @@ exec geth \
   --verbosity=3 \
   --syncmode="full" \
   --gcmode="$NODE_TYPE" \
-  $EXTENDED_ARG $@
+  "$@"
\ No newline at end of file
diff --git a/scripts/start-op-node.sh b/scripts/start-op-node.sh
index 7ccd477..6a9d552 100755
--- a/scripts/start-op-node.sh
+++ b/scripts/start-op-node.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-set -e
+set -eu
 
 # Wait for the Bedrock flag for this network to be set.
 echo "Waiting for Bedrock node to initialize..."
@@ -7,30 +7,52 @@ while [ ! -f /shared/initialized.txt ]; do
   sleep 1
 done
 
-# PORT__OP_NODE_P2P changes the published host port in docker-compose.
-# Keep the in-container listener fixed to match the container-side mapping.
+# SECURITY FIX: Require the L1 endpoints that are necessary for a usable rollup node.
+# The launcher now fails closed with actionable errors if these are absent.
+L1_RPC_ENDPOINT="${OP_NODE__RPC_ENDPOINT:?Set OP_NODE__RPC_ENDPOINT in .env}"
+L1_BEACON_ENDPOINT="${OP_NODE__L1_BEACON:?Set OP_NODE__L1_BEACON in .env}"
+L1_RPC_TYPE="${OP_NODE__RPC_TYPE:-basic}"
 P2P_PORT="9003"
-L1_RPC_ENDPOINT="$OP_NODE__RPC_ENDPOINT"
-L1_BEACON_ENDPOINT="$OP_NODE__L1_BEACON"
-L1_RPC_TYPE="$OP_NODE__RPC_TYPE"
-export EXTENDED_ARG="${EXTENDED_ARG:-} --network=$NETWORK_NAME --rollup.load-protocol-versions=true --rollup.halt=major"
 
-# Override Holocene
-if [ ! -z "$OVERRIDE_HOLOCENE" ]; then
-  EXTENDED_ARG="$EXTENDED_ARG --override.holocene=$OVERRIDE_HOLOCENE"
+# Pass the network and protocol settings as fixed arguments.
+set -- \
+  "--network=$NETWORK_NAME" \
+  --rollup.load-protocol-versions=true \
+  --rollup.halt=major \
+  "$@"
+
+# SECURITY FIX: Wire the documented per-network P2P defaults from envs/<network>/op-node.env
+# directly into the op-node CLI flags.
+if [ -n "${OP_NODE_P2P_BOOTNODES:-}" ]; then
+  set -- "--p2p.bootnodes=$OP_NODE_P2P_BOOTNODES" "$@"
+fi
+if [ -n "${OP_NODE_P2P_STATIC:-}" ]; then
+  set -- "--p2p.static=$OP_NODE_P2P_STATIC" "$@"
 fi
 
-# These vars are wrapper inputs, not native op-node env flags.
-unset OP_NODE__RPC_ENDPOINT OP_NODE__L1_BEACON OP_NODE__RPC_TYPE
+# SECURITY FIX: Accept one explicit flag only to prevent shell argument injection.
+if [ -n "${EXTENDED_ARG:-}" ]; then
+  case "$EXTENDED_ARG" in
+    --*=*) set -- "$EXTENDED_ARG" "$@" ;;
+    *)
+      echo "EXTENDED_ARG must contain one --flag=value argument" >&2
+      exit 1
+      ;;
+  esac
+fi
+
+# Override Holocene when explicitly requested.
+if [ -n "${OVERRIDE_HOLOCENE:-}" ]; then
+  set -- "--override.holocene=$OVERRIDE_HOLOCENE" "$@"
+fi
 
-# Start op-node.
+# Start op-node with RPC and metrics bound inside the container network.
 exec op-node \
   --l1="$L1_RPC_ENDPOINT" \
   --l2=http://op-geth:8551 \
   --rpc.addr=0.0.0.0 \
   --rpc.port=9545 \
   --l2.jwt-secret=/shared/jwt.txt \
-  --l1.trustrpc \
   --l1.rpckind="$L1_RPC_TYPE" \
   --l1.beacon="$L1_BEACON_ENDPOINT" \
   --metrics.enabled \
@@ -41,4 +63,4 @@ exec op-node \
   --p2p.listen.ip=0.0.0.0 \
   --p2p.listen.tcp="$P2P_PORT" \
   --p2p.listen.udp="$P2P_PORT" \
-  $EXTENDED_ARG $@
+  "$@"
\ No newline at end of file