{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*",
            "extracted_events": [
              {
                "introduced": "4.11.8"
              },
              {
                "fixed": "4.12.27"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "5ca5c3e9764486b31ad7db4c0c19b2c926753ae3"
            },
            {
              "fixed": "97c6fe1f12298c715eb7b2da65b4b6e0d81682bb"
            },
            {
              "fixed": "fab3b13639339cbd5ba1166a5b23d9ac30c5f64f"
            }
          ],
          "repo": "https://github.com/honojs/hono",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hvrm-45r6-mjfj"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-362"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59896.json"
  },
  "details": "Hono is a Web application framework that provides support for any JavaScript runtime. From 4.11.8 before 4.12.27, hono/jsx did not isolate context values per request during server-side rendering, allowing createContext, useContext, jsxRenderer, or useRequestContext data from a different in-flight request to be used after an await in an async component. This issue is fixed in version 4.12.27.",
  "id": "CVE-2026-59896",
  "modified": "2026-07-15T01:49:14.084740883Z",
  "published": "2026-07-08T16:08:07.975Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/honojs/hono/releases/tag/v4.12.27"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59896.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/honojs/hono/security/advisories/GHSA-hvrm-45r6-mjfj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59896"
    },
    {
      "type": "FIX",
      "url": "https://github.com/honojs/hono/commit/fab3b13639339cbd5ba1166a5b23d9ac30c5f64f"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "hono/jsx does not isolate context per request, leading to cross-request data disclosure"
}