chore(deps): astro 5 → 6 to patch GHSA-j687-52p2-xcff - #2
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修 dependabot CVE-2026-41067 — define:vars XSS via incomplete </script> tag sanitization. patch 只在 astro 6.1.6 起，无 5.x backport。 实际利用面：BaseLayout.astro 仅一处 define:vars 注入 pageLocale， locale 类型受 'en' | 'zh' literal 约束，攻击者无法注入 — 但升级是 关掉 dependabot 告警的唯一路径。 bumps: - astro ^5.6.1 → ^6.1.9 - @astrojs/mdx ^4.2.2 → ^5.0.4 (peers astro ^6) @astrojs/tailwind 6.0.2 的 peerDependencies 仍卡 astro ^5，但 runtime 在 astro 6 工作正常 — 用 --legacy-peer-deps 装。后续 若官方未升 peer，再迁 @tailwindcss/vite。 build verify: 29 pages 全部生成，44K 编译产物 CSS，OKLCH 色板正常输出。 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
astro^5.6.1 → ^6.1.9 to close GHSA-j687-52p2-xcff (CVE-2026-41067 —define:varsXSS via incomplete</script>tag sanitization). Patch first lands in astro 6.1.6, no 5.x backport.@astrojs/mdx^4.2.2 → ^5.0.4 (peer-pinned to astro ^6).@astrojs/tailwindstays at 6.0.2: its peerDeps still pin astro ^5 but runtime works fine on astro 6. Installed with--legacy-peer-deps. If upstream doesn't relax peer constraint we'll migrate to@tailwindcss/vitein a follow-up.Practical exposure
define:varsis only used in one place —src/layouts/BaseLayout.astroinjectingpageLocaleinto an inline<script>. Thelocalevalue is typed'en' | 'zh'literal, so the attacker can't influence it through the prop chain. Real exploit surface = 0. Upgrade is purely to close the Dependabot alert and keep the supply chain current.Test plan
npm install --legacy-peer-depscleannpm run build— 29 pages built, exit 0npm run devsmoke (recommend manual check before merge: theme toggle, /zh language switch, blog mdx render)🤖 Generated with Claude Code