CVE-2025-6429 Affecting thunderbird package, versions <0:128.12.0-1.el8_10.alma.1


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.03% (8th percentile)

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  • Snyk IDSNYK-ALMALINUX8-THUNDERBIRD-10664946
  • published9 Jul 2025
  • disclosed1 Jul 2025

Introduced: 1 Jul 2025

NewCVE-2025-6429  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 thunderbird to version 0:128.12.0-1.el8_10.alma.1 or higher.
This issue was patched in ALSA-2025:10246.

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:8 relevant fixed versions and status.

Firefox could have incorrectly parsed a URL and rewritten it to the youtube.com domain when parsing the URL specified in an embed tag. This could have bypassed website security checks that restricted which domains users were allowed to embed. This vulnerability affects Firefox < 140 and Firefox ESR < 128.12.

CVSS Base Scores

version 3.1