diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index a38b0b0..e665d72 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -249,6 +249,62 @@ jobs:
           jq -e --arg version "${RELEASE_TAG#v}" '.ok == true and .version == $version' /tmp/artex-health.json
           curl --fail http://127.0.0.1:8787/ > /tmp/artex-index.html
           grep -qi '<!doctype html' /tmp/artex-index.html
+      - name: Verify compromised eMudhra certificates are distrusted
+        run: |
+          docker run --rm --entrypoint sh artex:smoke <<'EOF'
+          set -eu
+          ca_version="$(dpkg-query -W -f='${Version}' ca-certificates)"
+          dpkg --compare-versions "$ca_version" ge "20250419~deb12u2"
+          ARTEX_NODE_MIN_VERSION="22.23.4" node -e '
+            const minimum = process.env.ARTEX_NODE_MIN_VERSION.split(".").map(Number);
+            const actual = process.versions.node.split(".").map(Number);
+            for (let i = 0; i < 3; i++) {
+              if (actual[i] > minimum[i]) process.exit(0);
+              if (actual[i] < minimum[i]) process.exit(1);
+            }
+          '
+          if curl --fail --silent --show-error --max-time 15 \
+            https://dv-g3b-emudhra.we-have-a-problem.com/ >/dev/null; then
+            echo "curl accepted a certificate from a compromised eMudhra CA" >&2
+            exit 1
+          fi
+          if node -e '
+            fetch("https://dv-g3b-emudhra.we-have-a-problem.com/")
+              .then(() => process.exit(0), () => process.exit(1))
+          '; then
+            echo "Node accepted a certificate from a compromised eMudhra CA" >&2
+            exit 1
+          fi
+          NODE_PATH="$(npm root -g)" node <<'NODE'
+          const { chromium } = require("playwright");
+
+          (async () => {
+            const browser = await chromium.launch({ headless: true, args: ["--no-sandbox"] });
+            const page = await browser.newPage();
+            try {
+              await page.goto("https://dv-g3b-emudhra.we-have-a-problem.com/", {
+                waitUntil: "domcontentloaded",
+                timeout: 15000,
+              });
+              console.error("Chromium accepted a certificate from a compromised eMudhra CA");
+              process.exitCode = 1;
+            } catch (error) {
+              const message = String(error);
+              if (!/ERR_CERT_|CERT_/.test(message)) {
+                console.error(`Chromium verification failed for an unrelated reason: ${message}`);
+                process.exitCode = 1;
+              } else {
+                console.log("Chromium rejected the compromised eMudhra certificate");
+              }
+            } finally {
+              await browser.close();
+            }
+          })().catch((error) => {
+            console.error(error);
+            process.exitCode = 1;
+          });
+          NODE
+          EOF
       - name: Push tested architecture image
         uses: docker/build-push-action@v6
         with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 39be6ca..b494c2e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@
 
 ## [Unreleased]
 
+### 安全与发布
+
+- 更新 Go 至 1.26.10，并为 Docker 镜像增加最低 `ca-certificates` / Node.js 安全版本检查，避免继续构建信任已泄露 eMudhra 中间 CA 的旧镜像层。
+- Release 镜像冒烟测试验证 curl 与 Node.js 拒绝使用泄露 CA 签发的证书。
+
 ## [0.3.18] - 2026-10-12
 
 ### 审批审查
diff --git a/Dockerfile b/Dockerfile
index afc096f..a51f845 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,14 +12,34 @@
 #   docker build -t artex:local .
 FROM python:3.12-slim-bookworm
 ARG TARGETARCH
+ARG ARTEX_CA_CERTIFICATES_MIN_VERSION=20250419~deb12u2
+ARG ARTEX_NODE_MIN_VERSION=22.23.4
+# Bump this when a security baseline changes so BuildKit cannot reuse an older
+# apt layer that predates the baseline.
+ARG ARTEX_SECURITY_BASELINE=2026-10-21
 # 常用工具：ripgrep / curl / vim，加一批 recon 常备件（按需增删）。
 # Node 从 NodeSource 装 22.x，与前端构建使用的主版本一致。
-RUN apt-get update && apt-get install -y --no-install-recommends \
+RUN set -eux; \
+    echo "ARTEX_SECURITY_BASELINE=${ARTEX_SECURITY_BASELINE}"; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
       ca-certificates ripgrep curl wget vim git jq unzip \
-      dnsutils iputils-ping netcat-openbsd inetutils-telnet whois nmap \
-    && curl -fsSL https://deb.nodesource.com/setup_22.x | bash - \
-    && apt-get install -y --no-install-recommends nodejs \
-    && rm -rf /var/lib/apt/lists/*
+      dnsutils iputils-ping netcat-openbsd inetutils-telnet whois nmap; \
+    curl -fsSL https://deb.nodesource.com/setup_22.x | bash -; \
+    apt-get install -y --no-install-recommends nodejs; \
+    ca_version="$(dpkg-query -W -f='${Version}' ca-certificates)"; \
+    echo "ca-certificates=${ca_version}"; \
+    dpkg --compare-versions "$ca_version" ge "$ARTEX_CA_CERTIFICATES_MIN_VERSION"; \
+    node --version; \
+    ARTEX_NODE_MIN_VERSION="$ARTEX_NODE_MIN_VERSION" node -e ' \
+      const minimum = process.env.ARTEX_NODE_MIN_VERSION.split(".").map(Number); \
+      const actual = process.versions.node.split(".").map(Number); \
+      for (let i = 0; i < 3; i++) { \
+        if (actual[i] > minimum[i]) process.exit(0); \
+        if (actual[i] < minimum[i]) process.exit(1); \
+      } \
+    '; \
+    rm -rf /var/lib/apt/lists/*
 # 预装 Playwright MCP 与 CLI（全局），运行时不再 npx 联网下载。
 # @playwright/mcp：browser MCP 直接 `npx @playwright/mcp`（已全局装好，无需 -y/@latest）。
 # @playwright/cli：提供 playwright-cli，装完顺带 --help 验证可执行。
diff --git a/go.mod b/go.mod
index 35f1a14..ee5f10a 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/Autumn-27/artex
 
-go 1.26.3
+go 1.26.10
 
 require (
 	mvdan.cc/sh/v3 v3.10.0