{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.70.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@grackle-ai/server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.70.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-25T17:15:40Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "### Impact\n\nThe `renderPairingPage()` function embeds the `error` parameter directly into HTML without escaping:\n```typescript\nconst errorHtml = error ? `\u003cp style=\"color:#e74c3c\"\u003e${error}\u003c/p\u003e` : \"\";\n```\n\nAll current call sites pass hardcoded strings, so this is **not exploitable today**. However, the function is architecturally fragile \u2014 if a future code change passes user-controlled or dynamic content into the error parameter, it would create an XSS vulnerability.\n\nThe `renderAuthorizePage()` function in the same file correctly uses `escapeHtml()` for dynamic content, making this an inconsistency.\n\n**Affected code:**\n- `packages/server/src/index.ts:64-89` \u2014 `renderPairingPage()` with unescaped error interpolation\n- Compare: `packages/server/src/index.ts:130` \u2014 `renderAuthorizePage()` correctly uses `escapeHtml()`\n\n### Patches\n\nv0.70.1\n\n**Fix:** Apply `escapeHtml()` to the error parameter:\n```typescript\nconst errorHtml = error ? `\u003cp style=\"color:#e74c3c\"\u003e${escapeHtml(error)}\u003c/p\u003e` : \"\";\n```\n\n### Workarounds\n\nNo workaround needed \u2014 all current callers pass hardcoded strings.\n\n### Resources\n\n- CWE-79: Improper Neutralization of Input During Web Page Generation\n- File: `packages/server/src/index.ts`",
  "id": "GHSA-7q9x-8g6p-3x75",
  "modified": "2026-03-25T17:15:40Z",
  "published": "2026-03-25T17:15:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nick-pape/grackle/security/advisories/GHSA-7q9x-8g6p-3x75"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nick-pape/grackle"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "@grackle-ai/server: Unescaped Error String in renderPairingPage() HTML Template"
}