CVE-2026-12302

{
  "id": "CVE-2026-12302",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-16T13:16:30.460",
  "lastModified": "2026-10-26T13:10:00.140",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12."
    },
    {
      "lang": "es",
      "value": "Elusión de mitigación en el DOM: Componente de seguridad. Esta vulnerabilidad fue corregida en Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152 y Thunderbird 140.12."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
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          "product": "Firefox",
          "versions": [
            {
              "version": "115.37",
              "lessThanOrEqual": "115.*",
              "versionType": "rpm",
              "status": "unaffected"
            },
            {
              "version": "140.12",
              "lessThanOrEqual": "140.*",
              "versionType": "rpm",
              "status": "unaffected"
            },
            {
              "version": "152",
              "lessThanOrEqual": "*",
              "versionType": "rpm",
              "status": "unaffected"
            }
          ]
        },
        {
          "vendor": "Mozilla",
          "product": "Thunderbird",
          "versions": [
            {
              "version": "140.12",
              "lessThanOrEqual": "140.*",
              "versionType": "rpm",
              "status": "unaffected"
            },
            {
              "version": "152",
              "lessThanOrEqual": "*",
              "versionType": "rpm",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
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        "type": "Secondary",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5
      }
    ],
    "ssvcV203": [
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        "ssvcData": {
          "timestamp": "2026-06-16T17:30:14.187035Z",
          "id": "CVE-2026-12302",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
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          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
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      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-693"
        }
      ]
    }
  ],
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    {
      "nodes": [
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          "negate": false,
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  "references": [
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2034489",
      "source": "[email protected]",
      "tags": [
        "Permissions Required"
      ]
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2026-57/",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
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    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2026-58/",
      "source": "[email protected]",
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    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2026-59/",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2026-60/",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2026-61/",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}