CVE-2026-4726: high-severity vulnerability in Mozilla Firefox
Denial-of-service in the XML component
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.6%
Denial-of-service in the XML component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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