CVE-2025-8037 Affecting firefox package, versions <141.0-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.02% (4th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOX-10881478
  • published24 Jul 2025
  • disclosed22 Jul 2025

Introduced: 22 Jul 2025

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

How to fix?

Upgrade Debian:unstable firefox to version 141.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Debian. See How to fix? for Debian:unstable 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