Windows apps · Application version · January 28, 2026

Mozilla Thunderbird (ca) 147.0.1

Mozilla Thunderbird (ca) 147.0.1, released January 28, 2026, fixes 1 CVE in Mozilla Thunderbird (ca). None of them is reported as exploited. Patch Radar priority: Routine. The latest Mozilla Thunderbird (ca) is 159.0, which also fixes every one of these CVEs.

Routine

Superseded. The latest Mozilla Thunderbird (ca) is 159.0, which also fixes every CVE on this page. Install that instead.

CVEs closed
1
None rated Critical
Exploited
0
None reported
Highest CVSS
4.3
Base score, 0 to 10
Highest EPSS
0.0018
7th percentile

Applies to

ProductVersion
Mozilla Thunderbird (ca)147.0.1

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Routine CVE-2026-0818 CSS-based exfiltration of the content from partially encrypted emails when allowing remote content4.3 0.0018 None reported
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