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9.8 Critical

CVE-2025-8043 Focus incorrectly truncated URLs towards the beginning instead of around the origin

Description

Focus incorrectly truncated URLs towards the beginning instead of around the origin. This vulnerability was fixed in Firefox 141.

Affected products and versions

Product	Affected versions	Fixed in
Firefox 141	earliest → < 141	141
Thunderbird 141	earliest → < 141	141

References

bugzilla.mozilla.org bugzilla.mozilla.org
www.mozilla.org www.mozilla.org

Timeline

Published July 22, 2025
Last modified April 13, 2026

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