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CVE-2025-4083

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CVE-2025-4083

Published: Apr 29, 2025

Modified: Apr 13, 2026

PUBLISHED

Description

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.

VendorProductVersions

Mozilla

Firefox

unaffected
115.23 - <= 115.*
unaffected
128.10 - <= 128.*
unaffected
138 - <= *

Mozilla

Thunderbird

unaffected
128.10 - <= 128.*
unaffected
138 - <= *

References

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