CVE-2026-0890mediumCWE-290

CVE-2026-0890: medium-severity vulnerability in Mozilla Firefox

Spoofing issue in the DOM: Copy & Paste and Drag & Drop component

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.4epss 0.3%
Spoofing issue in the DOM: Copy & Paste and Drag & Drop component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Affected products
Mozilla · FirefoxMozilla · Thunderbird
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