Medium severity6.5NVD Advisory· Published Mar 24, 2026· Updated Apr 13, 2026
CVE-2026-3889
CVE-2026-3889
Description
Spoofing issue in Thunderbird. This vulnerability was fixed in Thunderbird 149 and Thunderbird 140.9.
Affected products
2cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*+ 1 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*range: <149.0
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*range: <140.9.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- www.mozilla.org/security/advisories/mfsa2026-23/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-24/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdPermissions Required
News mentions
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