diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
index afe59af..df2ac35 100644
--- a/.github/workflows/dependency-review.yml
+++ b/.github/workflows/dependency-review.yml
@@ -81,7 +81,7 @@ jobs:
             echo "python_deps_changed=$(has_file '^(pyproject\.toml|uv\.lock)$')"
             echo "fixture_npm_changed=$(has_file '^tests/e2e/fixtures/simple-npm/')"
             echo "fixture_pypi_changed=$(has_file '^tests/e2e/fixtures/simple-pypi/')"
-            echo "dockerfile_changed=$(has_file '^Dockerfile$')"
+            echo "dockerfile_changed=$(has_file '^(Dockerfile|scripts/docker-entrypoint\.sh)$')"
             echo "workflow_or_action_changed=$(has_file '^\.github/workflows/|^\.github/actions/|^\.github/dependabot\.yml$')"
           } >> "$GITHUB_OUTPUT"
 
@@ -562,7 +562,18 @@ jobs:
   dockerfile-smoke:
     needs: inspect
     if: needs.inspect.outputs.dockerfile_changed == 'true'
-    runs-on: ubuntu-latest
+    # Build every architecture the release publishes, each on a native runner,
+    # so an arm64-only break shows up here rather than in release.yml.
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - arch: amd64
+            runner: ubuntu-24.04
+          - arch: arm64
+            runner: ubuntu-24.04-arm
+    name: dockerfile-smoke (${{ matrix.arch }})
+    runs-on: ${{ matrix.runner }}
     timeout-minutes: 20
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -576,6 +587,71 @@ jobs:
           --build-arg USE_LOCAL_INSTALL=true
           -t socket-python-cli:dependabot-smoke .
 
+      - name: Check the tools in the image
+        run: |
+          docker run --rm --entrypoint sh socket-python-cli:dependabot-smoke -c '
+          set -eu
+          echo "node $(node -v), npm $(npm -v), yarn $(yarn -v)"
+          socket --version
+          socketcli --version
+          '
+
+      # The eMudhra test hosts serve certificates from the compromised
+      # intermediates. Require the specific rejection, not just any failure, so
+      # a DNS or network error cannot pass as "rejected".
+      - name: Check TLS clients reject the compromised eMudhra intermediates
+        run: |
+          docker run --rm --entrypoint sh socket-python-cli:dependabot-smoke -c '
+          set -u
+          status=0
+          for host in dv-g3b-emudhra.we-have-a-problem.com dv-g3b-aaa-emudhra.we-have-a-problem.com; do
+            code=0
+            curl -sS -m 30 -o /dev/null "https://$host/" 2>/dev/null || code=$?
+            if [ "$code" = 60 ]; then
+              echo "curl rejects $host"
+            else
+              echo "::error::curl on $host exited $code, expected 60 (certificate verification failed)"
+              status=1
+            fi
+            result=$(node -e "
+              const req = require(\"https\").get(process.argv[1], { timeout: 30000 }, (res) => {
+                console.log(\"ACCEPTED\"); process.exit(0);
+              });
+              req.on(\"timeout\", () => { console.log(\"TIMEOUT\"); process.exit(0); });
+              req.on(\"error\", (e) => { console.log(e.code || e.message); process.exit(0); });
+            " "https://$host/")
+            case "$result" in
+              CERT_REVOKED|UNABLE_TO_GET_ISSUER_CERT_LOCALLY|UNABLE_TO_VERIFY_LEAF_SIGNATURE) echo "node rejects $host ($result)" ;;
+              *) echo "::error::node on $host: $result"; status=1 ;;
+            esac
+            result=$(python -c "
+          import sys, requests
+          try:
+              requests.get(sys.argv[1], timeout=30)
+              print(\"ACCEPTED\")
+          except requests.exceptions.SSLError:
+              print(\"SSLError\")
+          except Exception as e:
+              print(type(e).__name__)
+          " "https://$host/")
+            if [ "$result" = SSLError ]; then
+              echo "python rejects $host"
+            else
+              echo "::error::python requests on $host: $result"
+              status=1
+            fi
+          done
+          for url in https://api.socket.dev/v0/ https://registry.npmjs.org/ https://pypi.org/simple/; do
+            if curl -sS -m 30 -o /dev/null "$url"; then
+              echo "curl connects to $url"
+            else
+              echo "::error::curl cannot connect to $url"
+              status=1
+            fi
+          done
+          exit $status
+          '
+
   workflow-notice:
     needs: inspect
     if: needs.inspect.outputs.workflow_or_action_changed == 'true'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4c8aa2..d79801a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 ## 2.11.2
 
+### Fixed: stop trusting the compromised eMudhra intermediate CAs
+
+- The CLI and every tool in the Docker image now reject certificates issued
+  from the compromised eMudhra intermediate CAs.
+- Bumped `certifi` to `2026.10.19` and the image's bundled `uv` to `0.13.4`.
+- The image now takes Node.js from the official `node:24-alpine` image (`24.22.1`)
+  instead of Alpine's `nodejs` package, which hasn't shipped Node's fix.
+
 ### Changed: bump pinned Coana CLI to 15.12.11
 
 - Bumped the pinned reachability engine (the Coana CLI) from `15.12.10` to
diff --git a/Dockerfile b/Dockerfile
index 55abd0f..15a6ada 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,3 +1,8 @@
+# Node.js from the official Alpine image instead of Alpine's nodejs package, which
+# lags Node's security releases. Match the major version to what reachability needs
+# and the Alpine release to the python:3-alpine base below.
+FROM node:24-alpine3.24 AS node
+
 FROM python:3-alpine
 LABEL org.opencontainers.image.authors="socket.dev"
 
@@ -14,9 +19,27 @@ ARG PIP_EXTRA_INDEX_URL=https://pypi.org/simple
 ARG USE_LOCAL_INSTALL=false
 
 # Install base packages first
+# ca-certificates must be 20261020-r0 or newer, which drops the roots the
+# compromised eMudhra intermediates chain to. The base image ships an older
+# one, and `apk add` does not upgrade installed packages, so upgrade it here.
 RUN apk update && apk add --no-cache \
-        git nodejs npm yarn curl wget \
-        ruby ruby-dev build-base strace
+        git curl wget \
+        ruby ruby-dev build-base strace && \
+    apk upgrade --no-cache ca-certificates && \
+    [ "$(apk version -t "$(apk list -I ca-certificates | awk '{print $1}' | sed 's/^ca-certificates-//')" 20261020-r0)" != "<" ]
+
+# npm, npx and yarn are symlinks in the node image. COPY would dereference them
+# into flat files and break their relative requires, so recreate the links.
+COPY --from=node /usr/local/bin/node /usr/local/bin/node
+COPY --from=node /usr/local/lib/node_modules /usr/local/lib/node_modules
+COPY --from=node /opt /opt
+# Node rejects the compromised eMudhra intermediates from 24.22.1.
+RUN ln -s ../lib/node_modules/npm/bin/npm-cli.js /usr/local/bin/npm && \
+    ln -s ../lib/node_modules/npm/bin/npx-cli.js /usr/local/bin/npx && \
+    ln -s ../lib/node_modules/corepack/dist/corepack.js /usr/local/bin/corepack && \
+    ln -s /opt/yarn-v*/bin/yarn /usr/local/bin/yarn && \
+    ln -s /opt/yarn-v*/bin/yarnpkg /usr/local/bin/yarnpkg && \
+    node -e 'const [a,b,c]=process.versions.node.split(".").map(Number); process.exit(a>24||(a===24&&(b>22||(b===22&&c>=1)))?0:1)'
 
 # Install Go with version control
 RUN if [ "$GO_VERSION" = "system" ]; then \
@@ -85,8 +108,8 @@ RUN npm install socket -g && \
 ENV PATH="/usr/local/go/bin:/usr/lib/go/bin:/root/.cargo/bin:${PATH}"
 ENV GOPATH="/go"
 
-# Install uv
-COPY --from=ghcr.io/astral-sh/uv:0.10.4 /uv /usr/local/bin/uv
+# Install uv (0.13.4+ ships the patched webpki-roots)
+COPY --from=ghcr.io/astral-sh/uv:0.13.4 /uv /usr/local/bin/uv
 
 # Install pyenv
 # pyenv lets us build/install arbitrary Python versions on demand. We install