CVE-2026-42254

Full vulnerability record from the local CVENow database.

Description

Hickory DNS hickory-recursor 0.1 through 0.25.2 allows cross-zone poisoning because cached data is not directly associated with a query that triggered a response.

Severity

MEDIUM

CVSS score

4.0 (v3.1)

Vulnerability status

Awaiting Analysis

Source identifier

[email protected]

Published

2026-04-26 03:15:59.080000

Last modified

2026-10-26 22:10:00.163000

View original CVE JSON

{
  "id": "CVE-2026-42254",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-26T03:15:59.080",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Hickory DNS hickory-recursor 0.1 through 0.25.2 allows cross-zone poisoning because cached data is not directly associated with a query that triggered a response."
    },
    {
      "lang": "es",
      "value": "Hickory DNS hickory-recursor 0.1 a 0.25.2 permite el envenenamiento entre zonas porque los datos en caché no están directamente asociados con una consulta que desencadenó una respuesta."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Hickory Project",
          "product": "Hickory DNS",
          "defaultStatus": "unaffected",
          "packageURL": "pkg:cargo/hickory-recursor",
          "versions": [
            {
              "version": "0.1",
              "lessThan": "0.26",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
          "baseScore": 4.0,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-27T13:18:57.831422Z",
          "id": "CVE-2026-42254",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-706"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-83hf-93m4-rgwq",
      "source": "[email protected]"
    }
  ]
}