CVE-2026-3889

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

6.5 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N                                    

Spoofing issue in Thunderbird. This vulnerability affects Thunderbird < 149 and Thunderbird < 140.9.

Published Date

March 24, 2026

Last Modified

March 27, 2026

CWE ID

CWE-451

Source

NVD

Vendor

mozilla

Product

thunderbird