CVE-2025-0239 Affecting thunderbird package, versions <0:128.6.0-3.el8_10.alma.1


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.23% (13th percentile)

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  • Snyk IDSNYK-ALMALINUX8-THUNDERBIRD-22277698
  • published7 Nov 2026
  • disclosed9 Jan 2025

Introduced: 9 Jan 2025

CVE-2025-0239  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 thunderbird to version 0:128.6.0-3.el8_10.alma.1 or higher.
This issue was patched in ALSA-2025:0281.

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.

When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

CVSS Base Scores

version 3.1