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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*+ 2 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*range: <149.0
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*range: <140.9.0
- (no CPE)
- osv-coords3 versionspkg:rpm/almalinux/thunderbirdpkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweed
< 140.9.0-1.el9_7.alma.1+ 2 more
- (no CPE)range: < 140.9.0-1.el9_7.alma.1
- (no CPE)range: < 140.9.0-150200.8.263.1
- (no CPE)range: < 140.9.0-1.1
Patches
Vulnerability mechanics
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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