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Security Vulnerabilities fixed in Firefox 150 — Mozilla

🗓️ 21 Apr 2026 00:00:00Reported by Mozilla FoundationType 
mozilla
 mozilla
🔗 www.mozilla.org👁 11 Views

Firefox 150 fixes security flaws; memory safety bugs in Firefox 149 and Thunderbird 149 may allow execution.

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21 Apr 2026 00:00Current
6Medium risk
Vulners AI Score6
CVSS 3.19.8
EPSS0.0007
SSVC
11