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4.7 Medium

CVE-2024-5691 By tricking the browser with a `X-Frame-Options` header, a sandboxed iframe could have presented a button that, if…

Description

By tricking the browser with a `X-Frame-Options` header, a sandboxed iframe could have presented a button that, if clicked by a user, would bypass restrictions to open a new window. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.

Affected products and versions

Product Affected versions Fixed in
Firefox 127 earliest → < 127 127
Firefox ESR 115.12 earliest → < 115.12 115.12
Thunderbird 115.12 earliest → < 115.12 115.12

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
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