FIREFOX · CVE-2026-124950 · Runtime
NO FIX YET · SEE WHAT TO DO
A flaw in Firefox's CSS parsing and computation component allows a same-origin policy bypass, letting content read data across site boundaries. The description states it was fixed in Firefox 160.
first public Nov 10, 2026 · 1 source
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Not affected if firefox-160-or-later
Who cares browser, firefox
firefox --version on the command line.160 are the ones the description names as fixed in 160.160 (the fixed release named in the description).Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 160.
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