CVE-2026-12330 is a vulnerability in Mozilla Firefox
Published on June 16, 2026
Incorrect boundary conditions in the Internationalization component
Incorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12 and Firefox ESR 115.37.
Products Associated with CVE-2026-12330
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Affected Versions
Mozilla Firefox:- Version 115.37, <= 115.* is unaffected.
- Version 140.12, <= * is unaffected.