User Interface (UI) Misrepresentation of Critical Information Affecting thunderbird package, versions <0:128.9.2-1.el9_5


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (9th percentile)

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  • Snyk IDSNYK-RHEL9-THUNDERBIRD-9834495
  • published28 Apr 2025
  • disclosed15 Apr 2025

Introduced: 15 Apr 2025

NewCVE-2025-3523  (opens in a new tab)
CWE-451  (opens in a new tab)

How to fix?

Upgrade RHEL:9 thunderbird to version 0:128.9.2-1.el9_5 or higher.
This issue was patched in RHSA-2025:4229.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

When an email contains multiple attachments with external links via the X-Mozilla-External-Attachment-URL header, only the last link is shown when hovering over any attachment. Although the correct link is used on click, the misleading hover text could trick users into downloading content from untrusted sources. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2.

CVSS Base Scores

version 3.1