diff --git a/.github/scripts/enforce-image-security.sh b/.github/scripts/enforce-image-security.sh
new file mode 100755
index 0000000..0f27cc7
--- /dev/null
+++ b/.github/scripts/enforce-image-security.sh
@@ -0,0 +1,111 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+report_file="${1:-trivy-image.json}"
+allowlist_file="${2:-.github/security/trivy-critical-allowlist.json}"
+policy_date="${SECURITY_POLICY_DATE:-$(date -u +%F)}"
+summary_file="${GITHUB_STEP_SUMMARY:-/dev/null}"
+
+if [[ ! -s "$report_file" || ! -s "$allowlist_file" ]]; then
+  echo "Image security policy input is missing" >&2
+  exit 2
+fi
+
+jq -e '
+  type == "array" and length > 0 and
+  all(.[];
+    (.vulnerability | test("^CVE-[0-9]{4}-[0-9]+$")) and
+    (.package | type == "string" and length > 0) and
+    (.installed_version | type == "string" and length > 0) and
+    (.reviewed_on | test("^[0-9]{4}-[0-9]{2}-[0-9]{2}$")) and
+    (.expires | test("^[0-9]{4}-[0-9]{2}-[0-9]{2}$")) and
+    (.expires >= .reviewed_on) and
+    (.rationale | type == "string" and length >= 40) and
+    (.source | test("^https://security-tracker\\.debian\\.org/tracker/CVE-"))) and
+  ([.[] | [.vulnerability, .package, .installed_version] | join("|")] |
+    length == (unique | length))
+' "$allowlist_file" >/dev/null
+
+policy_json="$(jq -n \
+  --slurpfile report "$report_file" \
+  --slurpfile allowlist "$allowlist_file" \
+  --arg today "$policy_date" '
+  def findings: $report[0].Results[]?.Vulnerabilities[]?;
+  def same_finding($finding; $exception):
+    $exception.vulnerability == $finding.VulnerabilityID and
+    $exception.package == $finding.PkgName and
+    $exception.installed_version == $finding.InstalledVersion;
+  def compact_finding:
+    {
+      vulnerability: .VulnerabilityID,
+      package: .PkgName,
+      installed_version: .InstalledVersion,
+      fixed_version: (.FixedVersion // ""),
+      status: (.Status // "unknown")
+    };
+  {
+    critical: [findings | select(.Severity == "CRITICAL")] | length,
+    high: [findings | select(.Severity == "HIGH")] | length,
+    fixable_critical: [
+      findings |
+      select(.Severity == "CRITICAL" and ((.FixedVersion // "") | length > 0)) |
+      compact_finding
+    ],
+    fixable_high: [
+      findings |
+      select(.Severity == "HIGH" and ((.FixedVersion // "") | length > 0)) |
+      compact_finding
+    ],
+    unexpected_critical: [
+      findings |
+      select(.Severity == "CRITICAL") as $finding |
+      select([
+        $allowlist[0][] |
+        select(same_finding($finding; .) and .expires >= $today)
+      ] | length == 0) |
+      compact_finding
+    ],
+    expired_exceptions: [
+      $allowlist[0][] | select(.expires < $today) |
+      {vulnerability, package, installed_version, expires}
+    ],
+    stale_exceptions: [
+      $allowlist[0][] as $exception |
+      select([
+        findings | select(same_finding(.; $exception))
+      ] | length == 0) |
+      $exception | {vulnerability, package, installed_version, expires}
+    ]
+  }
+')"
+
+critical="$(jq -r '.critical' <<<"$policy_json")"
+high="$(jq -r '.high' <<<"$policy_json")"
+fixable_critical="$(jq -r '.fixable_critical | length' <<<"$policy_json")"
+fixable_high="$(jq -r '.fixable_high | length' <<<"$policy_json")"
+unexpected_critical="$(jq -r '.unexpected_critical | length' <<<"$policy_json")"
+expired_exceptions="$(jq -r '.expired_exceptions | length' <<<"$policy_json")"
+stale_exceptions="$(jq -r '.stale_exceptions | length' <<<"$policy_json")"
+
+{
+  echo "### PaperTrade runtime image security"
+  echo
+  echo "- Policy date: ${policy_date}"
+  echo "- Critical occurrences: ${critical}"
+  echo "- High occurrences: ${high}"
+  echo "- Fixable critical occurrences: ${fixable_critical}"
+  echo "- Fixable high occurrences: ${fixable_high}"
+  echo "- Unexpected or expired critical occurrences: ${unexpected_critical}"
+  echo "- Expired exception records: ${expired_exceptions}"
+  echo "- Stale exception records: ${stale_exceptions}"
+} >>"$summary_file"
+
+if (( fixable_critical > 0 || fixable_high > 0 || unexpected_critical > 0 ||
+      expired_exceptions > 0 || stale_exceptions > 0 )); then
+  echo "Runtime image policy failed" >&2
+  jq '{fixable_critical, fixable_high, unexpected_critical, expired_exceptions, stale_exceptions}' \
+    <<<"$policy_json" >&2
+  exit 1
+fi
+
+echo "Runtime image policy passed: critical=${critical} high=${high} exceptions=${critical}"
diff --git a/.github/security/trivy-critical-allowlist.json b/.github/security/trivy-critical-allowlist.json
new file mode 100644
index 0000000..319bf2a
--- /dev/null
+++ b/.github/security/trivy-critical-allowlist.json
@@ -0,0 +1,74 @@
+[
+  {
+    "vulnerability": "CVE-2026-58016",
+    "package": "libglib2.0-0t64",
+    "installed_version": "2.84.4-3~deb13u3",
+    "reviewed_on": "2026-08-24",
+    "expires": "2026-09-07",
+    "rationale": "Debian Trixie marks the GDBus introspection XML denial of service as minor/no-DSA and has no Trixie fix; PaperTrade does not parse caller-supplied D-Bus introspection XML.",
+    "source": "https://security-tracker.debian.org/tracker/CVE-2026-58016"
+  },
+  {
+    "vulnerability": "CVE-2026-34873",
+    "package": "libmbedcrypto16",
+    "installed_version": "3.6.5-0.1~deb13u1",
+    "reviewed_on": "2026-08-24",
+    "expires": "2026-09-07",
+    "rationale": "Debian Trixie marks this TLS 1.3 resumption issue as minor/no-DSA and has no Trixie fix; the runtime carries the crypto library transitively and does not use Mbed TLS for its public HTTPS termination.",
+    "source": "https://security-tracker.debian.org/tracker/CVE-2026-34873"
+  },
+  {
+    "vulnerability": "CVE-2026-34875",
+    "package": "libmbedcrypto16",
+    "installed_version": "3.6.5-0.1~deb13u1",
+    "reviewed_on": "2026-08-24",
+    "expires": "2026-09-07",
+    "rationale": "Debian Trixie marks the FFDH export overflow as minor/no-DSA and has no Trixie fix; PaperTrade does not expose an Mbed TLS FFDH key-export operation.",
+    "source": "https://security-tracker.debian.org/tracker/CVE-2026-34875"
+  },
+  {
+    "vulnerability": "CVE-2026-6653",
+    "package": "libxml2",
+    "installed_version": "2.12.7+dfsg+really2.9.14-2.1+deb13u3",
+    "reviewed_on": "2026-08-24",
+    "expires": "2026-09-07",
+    "rationale": "Debian Trixie marks the crafted-XML denial of service as minor/no-DSA and has no Trixie fix. Document conversion can process untrusted input, so this remains a short exception that must be removed as soon as Debian publishes a fix.",
+    "source": "https://security-tracker.debian.org/tracker/CVE-2026-6653"
+  },
+  {
+    "vulnerability": "CVE-2026-13221",
+    "package": "perl-base",
+    "installed_version": "5.40.1-6",
+    "reviewed_on": "2026-08-24",
+    "expires": "2026-09-07",
+    "rationale": "Trixie has no fixed Perl package; PaperTrade does not construct attacker-controlled Perl regular expressions with more than 65,535 literal branches.",
+    "source": "https://security-tracker.debian.org/tracker/CVE-2026-13221"
+  },
+  {
+    "vulnerability": "CVE-2026-42496",
+    "package": "perl-base",
+    "installed_version": "5.40.1-6",
+    "reviewed_on": "2026-08-24",
+    "expires": "2026-09-07",
+    "rationale": "Debian postponed the Trixie Archive::Tar symlink fix while upstream regressions are resolved; the application does not extract caller-supplied archives through Perl Archive::Tar.",
+    "source": "https://security-tracker.debian.org/tracker/CVE-2026-42496"
+  },
+  {
+    "vulnerability": "CVE-2026-8376",
+    "package": "perl-base",
+    "installed_version": "5.40.1-6",
+    "reviewed_on": "2026-08-24",
+    "expires": "2026-09-07",
+    "rationale": "The overflow requires a 32-bit Perl build and an attacker-controlled regular expression; the production image is Linux/amd64. Debian classifies it as minor/no-DSA with no current Trixie fix.",
+    "source": "https://security-tracker.debian.org/tracker/CVE-2026-8376"
+  },
+  {
+    "vulnerability": "CVE-2026-54058",
+    "package": "python3-pil",
+    "installed_version": "11.1.0-5+deb13u4",
+    "reviewed_on": "2026-08-24",
+    "expires": "2026-09-07",
+    "rationale": "Debian Trixie marks the McIDAS AREA mmap disclosure/denial of service as minor/no-DSA and has no Trixie fix. The affected decoder is not a supported PaperTrade input path, but conversion handles untrusted files, so the exception is deliberately short.",
+    "source": "https://security-tracker.debian.org/tracker/CVE-2026-54058"
+  }
+]
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 71b437c..498722f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v7.0.0
       - uses: actions/setup-node@v6.4.0
         with:
-          node-version: 22
+          node-version: 24
           cache: npm
       - run: npm ci
         env:
diff --git a/.github/workflows/image-security.yml b/.github/workflows/image-security.yml
new file mode 100644
index 0000000..592cc2b
--- /dev/null
+++ b/.github/workflows/image-security.yml
@@ -0,0 +1,73 @@
+name: Runtime Image Security
+
+on:
+  pull_request:
+    paths:
+      - .github/scripts/enforce-image-security.sh
+      - .github/security/trivy-critical-allowlist.json
+      - .github/workflows/image-security.yml
+      - Dockerfile
+      - Dockerfile.runtime-base
+      - package.json
+      - package-lock.json
+  push:
+    branches:
+      - master
+    paths:
+      - .github/scripts/enforce-image-security.sh
+      - .github/security/trivy-critical-allowlist.json
+      - .github/workflows/image-security.yml
+      - Dockerfile
+      - Dockerfile.runtime-base
+      - package.json
+      - package-lock.json
+  schedule:
+    - cron: "41 11 * * 2"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  scan:
+    runs-on: ubuntu-24.04
+    timeout-minutes: 60
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - name: Build current runtime base
+        run: |
+          set -euo pipefail
+          docker build \
+            --file Dockerfile.runtime-base \
+            --tag papertrade-runtime-base:security-candidate \
+            .
+      - name: Build current application image
+        run: |
+          set -euo pipefail
+          docker build \
+            --build-arg RUNTIME_BASE_IMAGE=papertrade-runtime-base:security-candidate \
+            --build-arg VITE_APP_VERSION="${GITHUB_SHA}" \
+            --file Dockerfile \
+            --tag papertrade:security-candidate \
+            .
+      - name: Scan the exact candidate image
+        run: |
+          set -euo pipefail
+          docker run --rm \
+            --volume /var/run/docker.sock:/var/run/docker.sock \
+            --volume "${GITHUB_WORKSPACE}:/workspace" \
+            aquasec/trivy:0.73.0@sha256:7cced7cae583819fc7806d4cbc0dbbc7cad18b99f7d3e235192e6da8c091045c \
+            image \
+            --scanners vuln \
+            --format json \
+            --output /workspace/trivy-image.json \
+            papertrade:security-candidate
+      - name: Enforce the production image policy
+        run: .github/scripts/enforce-image-security.sh
+      - name: Retain the scanner report
+        if: always()
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: papertrade-trivy-${{ github.sha }}
+          path: trivy-image.json
+          if-no-files-found: warn
diff --git a/Dockerfile b/Dockerfile
index 3d6f565..fd4f28d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,5 @@
-ARG NODE_IMAGE=node:22-bookworm-slim@sha256:d649c27dae7ba0137b3cef5dd75baa422c08dc3d9e3fc0c23dfb172dc3cc6436
+ARG NODE_IMAGE=node:24-trixie-slim@sha256:0711b541c1c33a8a530ac4f0d391baa9a15b3d804695b1b24a47daa5fb60e74d
+ARG RUNTIME_BASE_IMAGE=papertrade-runtime-base:local
 FROM ${NODE_IMAGE} AS build
 
 ARG VITE_APP_VERSION=browser
@@ -15,7 +16,6 @@ RUN npm ci && npm cache clean --force
 COPY . .
 RUN npm run build && npm prune --omit=dev
 
-ARG RUNTIME_BASE_IMAGE=papertrade-runtime-base:local
 FROM ${RUNTIME_BASE_IMAGE}
 
 ENV NODE_ENV=production
diff --git a/Dockerfile.runtime-base b/Dockerfile.runtime-base
index 37a8bd7..5510aa2 100644
--- a/Dockerfile.runtime-base
+++ b/Dockerfile.runtime-base
@@ -1,4 +1,4 @@
-ARG NODE_IMAGE=node:22-bookworm-slim@sha256:d649c27dae7ba0137b3cef5dd75baa422c08dc3d9e3fc0c23dfb172dc3cc6436
+ARG NODE_IMAGE=node:24-trixie-slim@sha256:0711b541c1c33a8a530ac4f0d391baa9a15b3d804695b1b24a47daa5fb60e74d
 FROM ${NODE_IMAGE}
 
 LABEL org.opencontainers.image.title="PaperTrade runtime base"
diff --git a/docs/devops.md b/docs/devops.md
index 814e740..dcfc2fb 100644
--- a/docs/devops.md
+++ b/docs/devops.md
@@ -85,3 +85,34 @@ The workflow accepts an optional `source_sha` and a `build_runtime_base` switch.
 Keep `build_runtime_base=false` for normal deploys. Set it to `true` only after
 reviewing changes to `Dockerfile.runtime-base`, Node major versions, or document
 conversion dependencies.
+
+## Runtime image security
+
+`.github/workflows/image-security.yml` builds the complete runtime image on a
+GitHub-hosted Linux/amd64 runner for every runtime-input change, once a week,
+and on manual dispatch. It scans the exact built image with digest-pinned
+Trivy `0.73.0`, retains the JSON report, and rejects any critical occurrence
+or any high occurrence for which the distribution publishes a fixed version.
+An unfixable critical can pass only when its exact CVE, binary package, and
+installed version appear in
+`.github/security/trivy-critical-allowlist.json` with a current review,
+Debian-tracker source, risk rationale, and unexpired deadline. New, expired,
+stale, or newly fixable criticals fail the build. Exception records are short:
+the initial Debian Trixie set expires on `2026-09-07`, so a weekly scan cannot
+turn a temporary upstream wait into permanent acceptance.
+
+The 2026-08-24 review accepted eight such occurrences for at most fourteen
+days. Debian classifies the GLib, Mbed TLS, libxml2, Perl Archive::Tar, 32-bit
+Perl regex, and Pillow findings as minor/no-DSA or postponed in Trixie. The
+runtime does not expose the affected D-Bus introspection, Mbed TLS termination,
+Perl archive extraction, or enormous/32-bit Perl regex paths. PaperTrade does
+process untrusted documents, so the libxml2 and Pillow exceptions remain
+deliberately short even though their specific XML and McIDAS AREA paths are not
+supported application inputs. Remove an exception as soon as its finding
+disappears; the gate rejects a stale record rather than silently accumulating
+waivers.
+
+The scanner gate runs outside the production cluster. This keeps large
+LibreOffice and Calibre rebuild downloads off the Evans Creek Starlink links
+and prevents a security candidate build from competing with production pods.
+The production deploy remains a separate, explicitly dispatched workflow.
diff --git a/scripts/k8s/build-local-image.sh b/scripts/k8s/build-local-image.sh
index 9c873bb..9ab0892 100755
--- a/scripts/k8s/build-local-image.sh
+++ b/scripts/k8s/build-local-image.sh
@@ -13,7 +13,7 @@ Environment:
   BUILD_TARGET             app, runtime-base, or all. Defaults to app.
   SOURCE_SHA               Source commit SHA. Defaults to current git HEAD.
   IMAGE_TAG                App image tag. Defaults to <short-sha>-production-<utc-date>.
-  RUNTIME_BASE_TAG         Runtime base tag. Defaults to node22-bookworm-docs-2026-08-16-r1.
+  RUNTIME_BASE_TAG         Runtime base tag. Defaults to node24-trixie-docs-2026-08-24-r1.
   RUNTIME_BASE_IMAGE       Pull image used as Dockerfile runtime base. Defaults to
                            <REGISTRY_PULL>/p2ppsr/papertrade-runtime-base:<tag>.
   REGISTRY_PUSH            Push registry. Defaults to 10.152.183.28:5000.
@@ -36,7 +36,7 @@ source_sha="${SOURCE_SHA:-$(git rev-parse HEAD)}"
 short_sha="${source_sha:0:12}"
 image_date="${IMAGE_DATE:-$(date -u +%F)}"
 image_tag="${IMAGE_TAG:-${short_sha}-production-${image_date}}"
-runtime_base_tag="${RUNTIME_BASE_TAG:-node22-bookworm-docs-2026-08-16-r1}"
+runtime_base_tag="${RUNTIME_BASE_TAG:-node24-trixie-docs-2026-08-24-r1}"
 registry_push="${REGISTRY_PUSH:-10.152.183.28:5000}"
 registry_pull="${REGISTRY_PULL:-registry.cars-operator-system.svc.cluster.local:5000}"
 kubectl_cmd="${KUBECTL:-kubectl}"