Race Condition in JS Engine, Firefox <154, fixed v154
CVE-2026-74984 Published on August 18, 2026
Race condition in the JavaScript Engine component
Race condition in the JavaScript Engine component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.
Products Associated with CVE-2026-74984
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Affected Versions
Mozilla Firefox:- Version 153.1, <= 153.* is unaffected.
- Version 154, <= * is unaffected.