CVE-2025-8037 Affecting thunderbird package, versions *


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.02% (3rd percentile)

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  • Snyk IDSNYK-UBUNTU2204-THUNDERBIRD-10881716
  • published24 Jul 2025
  • disclosed22 Jul 2025

Introduced: 22 Jul 2025

NewCVE-2025-8037  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:22.04 thunderbird.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the nameless cookie was set over HTTP and the shadowed cookie included the Secure attribute. This vulnerability affects Firefox < 141, Firefox ESR < 140.1, Thunderbird < 141, and Thunderbird < 140.1.

CVSS Base Scores

version 3.1