CVE-2025-9183 Spoofing issue in the Address Bar component

Description

Spoofing issue in the Address Bar component. This vulnerability was fixed in Firefox 142 and Firefox ESR 140.2.

Affected products and versions

Product	Affected versions	Fixed in
Firefox 142	earliest → < 142	142
Firefox 140.2	earliest → < 140.2	140.2
Firefox ESR 140.2	earliest → < 140.2	140.2

Other CVEs of Firefox

The 2221 CVEs of Firefox →

CVE-2026-120572 Incorrect boundary conditions in the Layout: Block and Inline component 8.8 High CVE-2026-118027 Frame poisoning in the Layout component 9.1 Critical CVE-2026-118024 Use-after-free in the Graphics: Text component 8.8 High CVE-2026-118025 Other issue in the SVG component 8.8 High