FKIE_CVE-2026-39410

Vulnerability from fkie_nvd - Published: 2026-04-08 15:16 - Updated: 2026-07-24 21:10
Severity
4.8 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a discrepancy between browser cookie parsing and parse() handling allows cookie prefix protections to be bypassed. Cookie names that are treated as distinct by the browser may be normalized to the same key by parse(), allowing attacker-controlled cookies to override legitimate ones. This vulnerability is fixed in 4.12.12.
References
security-advisories@github.comhttps://github.com/honojs/hono/commit/cc067c85592415cb1880ad3c61ed923472452ec0Third Party Advisory
security-advisories@github.comhttps://github.com/honojs/hono/releases/tag/v4.12.12Release Notes
security-advisories@github.comhttps://github.com/honojs/hono/security/advisories/GHSA-r5rp-j6wh-rvv4Vendor Advisory
Impacted products
Vendor Product Version
hono hono *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "hono",
          "vendor": "honojs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.12.12"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "295EEF12-243F-4561-B181-C19451B5285C",
              "versionEndIncluding": "4.12.11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a discrepancy between browser cookie parsing and parse() handling allows cookie prefix protections to be bypassed. Cookie names that are treated as distinct by the browser may be normalized to the same key by parse(), allowing attacker-controlled cookies to override legitimate ones. This vulnerability is fixed in 4.12.12."
    },
    {
      "lang": "es",
      "value": "Hono es un framework de aplicaci\u00f3n web que proporciona soporte para cualquier entorno de ejecuci\u00f3n de JavaScript. Antes de 4.12.12, una discrepancia entre el an\u00e1lisis de cookies del navegador y el manejo de parse() permite que las protecciones de prefijo de cookie sean eludidas. Nombres de cookie que son tratados como distintos por el navegador pueden ser normalizados a la misma clave por parse(), permitiendo que las cookies controladas por el atacante anulen las leg\u00edtimas. Esta vulnerabilidad se corrige en 4.12.12."
    }
  ],
  "id": "CVE-2026-39410",
  "lastModified": "2026-07-24T21:10:00.143",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 2.5,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-39410",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-08T15:17:07.686689Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-08T15:16:15.143",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/honojs/hono/commit/cc067c85592415cb1880ad3c61ed923472452ec0"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/honojs/hono/releases/tag/v4.12.12"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/honojs/hono/security/advisories/GHSA-r5rp-j6wh-rvv4"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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