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7.5 High

CVE-2026-2803 Information disclosure, mitigation bypass in the Settings UI component

Description

Information disclosure, mitigation bypass in the Settings UI component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

Affected products and versions

Product Affected versions Fixed in
Firefox 148 earliest → < 148 148
Thunderbird 148 earliest → < 148 148

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-2026-118025 Other issue in the SVG component 8.8 High CVE-2026-118024 Use-after-free in the Graphics: Text component 8.8 High
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