CVE-2026-124922 · Runtime
NO FIX YET · SEE WHAT TO DO
A use-after-free bug in Firefox's CSS Transitions and Animations component lets a web page corrupt memory the browser has already released. The sources do not state what an attacker can achieve beyond that.
first public Nov 10, 2026 · 1 source
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Anyone running a Firefox build older than 160 or ESR older than 153.7 is exposed when they open web pages. Users on a current release are not affected. The sources do not say whether the flaw is reachable without user interaction.
Not affected if up-to-date-firefox
Who cares browser-users, firefox
160 for standard Firefox and 153.7 for Firefox ESR.160 and Firefox ESR 153.7 contain the fix.Use-after-free in the CSS Transitions and Animations component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.
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