{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.70.3"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@grackle-ai/server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.70.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-693",
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-25T17:32:04Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nThe HTTP server does not set `Content-Security-Policy`, `X-Frame-Options`, or `X-Content-Type-Options` headers on any response. This reduces defense-in-depth against XSS, clickjacking, and MIME-sniffing attacks.\n\nWhile the current XSS attack surface is small (React-markdown is configured safely, no `dangerouslySetInnerHTML`, Vite does not generate source maps), the absence of these headers means any future XSS vulnerability would have no secondary defense layer.\n\n**Affected code:**\n- `packages/server/src/index.ts` \u2014 all `res.writeHead()` calls only set `Content-Type`, with no security headers\n\n### Patches\n\n0.70.4\n\n**Fix:** Add security headers to all HTML/API responses:\n```typescript\nres.writeHead(200, {\n  \"Content-Type\": contentType,\n  \"Content-Security-Policy\": \"default-src \u0027self\u0027; script-src \u0027self\u0027; style-src \u0027self\u0027 \u0027unsafe-inline\u0027; img-src \u0027self\u0027 data:\",\n  \"X-Frame-Options\": \"DENY\",\n  \"X-Content-Type-Options\": \"nosniff\"\n});\n```\n\n### Workarounds\n\nUse a reverse proxy (nginx, Caddy) in front of the Grackle server to inject security headers.\n\n### References\n\n- CWE-693: Protection Mechanism Failure\n- OWASP: HTTP Security Response Headers\n- File: `packages/server/src/index.ts`",
  "id": "GHSA-3mjm-x6gw-2x42",
  "modified": "2026-03-25T17:32:04Z",
  "published": "2026-03-25T17:32:04Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nick-pape/grackle/security/advisories/GHSA-3mjm-x6gw-2x42"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nick-pape/grackle"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "@grackle-ai/server has Missing Content-Security-Policy and X-Frame-Options Headers"
}