CVE-2026-16355 is a vulnerability in Mozilla Firefox
Published on July 21, 2026
JIT miscompilation in the JavaScript Engine: JIT component
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.
Products Associated with CVE-2026-16355
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Affected Versions
Mozilla Firefox:- Version 115.38, <= 115.* is unaffected.
- Version 140.13, <= 140.* is unaffected.
- Version 153, <= * is unaffected.