CVE-2025-3523 Affecting thunderbird package, versions <0:128.9.2-1.el9_5.alma.1


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.04% (9th percentile)

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  • Snyk IDSNYK-ALMALINUX9-THUNDERBIRD-9901389
  • published29 Apr 2025
  • disclosed28 Apr 2025

Introduced: 28 Apr 2025

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

How to fix?

Upgrade AlmaLinux:9 thunderbird to version 0:128.9.2-1.el9_5.alma.1 or higher.
This issue was patched in ALSA-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 AlmaLinux. See How to fix? for AlmaLinux: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