CVE-2026-3889

| EUVD-2026-15019 MEDIUM
2026-03-24 mozilla
6.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 24, 2026 - 20:31 vuln.today
EUVD ID Assigned
Mar 24, 2026 - 20:31 euvd
EUVD-2026-15019
CVE Published
Mar 24, 2026 - 20:27 nvd
MEDIUM 6.5

Description

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

Analysis

A spoofing vulnerability exists in Mozilla Thunderbird that affects versions below 149 and below 140.9, allowing attackers to spoof email sources or identities. This vulnerability is classified as an information disclosure issue that could compromise email authentication and user trust. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

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Priority Score

33
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +32
POC: 0

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CVE-2026-3889 vulnerability details – vuln.today

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