CVE-2026-74981
High · 8.1CVSS
8.1
EPSS
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Published
Aug 18, 2026
CISA due date
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The record
Site isolation issue in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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