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9.8 Critical

CVE-2024-6611 A nested iframe, triggering a cross-site navigation, could send SameSite=Strict or Lax cookies

Description

A nested iframe, triggering a cross-site navigation, could send SameSite=Strict or Lax cookies. This vulnerability affects Firefox < 128 and Thunderbird < 128.

Affected products and versions

Product Affected versions Fixed in
Firefox 128 earliest → < 128 128
Thunderbird 128 earliest → < 128 128

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-2026-118026 Invalid pointer in the JavaScript: GC component 8.8 High CVE-2026-118025 Other issue in the SVG component 8.8 High
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