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CVE-2026-0890 Spoofing issue in the DOM: Copy & Paste and Drag & Drop component

🗓️ 13 Jan 2026 13:30:59Reported by mozillaType 
cvelist
 cvelist
🔗 www.cve.org👁 17 Views

Spoofing flaw in the DOM Copy & Paste and Drag & Drop component affects Firefox below 147 and extended support release below 140.7.

Related
Affected
Refs
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "140.7",
        "lessThanOrEqual": "140.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "147",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "140.7",
        "lessThanOrEqual": "140.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "147",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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