CVE-2025-4083 Affecting firefox package, versions <128.10-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.43% (36th percentile)

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  • Snyk IDSNYK-WOLFILATEST-FIREFOX-17762814
  • published1 Jul 2026
  • disclosed29 Apr 2025

Introduced: 29 Apr 2025

CVE-2025-4083  (opens in a new tab)

How to fix?

Upgrade Wolfi firefox to version 128.10-r0 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 Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10.

CVSS Base Scores

version 3.1