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Description

Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

PUBLISHED Reserved 2026-02-19 | Published 2026-02-24 | Updated 2026-02-26 | Assigner mozilla

Product status

Any version before 148
affected

Any version before 140.8
affected

Any version before 148
affected

Any version before 140.8
affected

Credits

x0e

References

bugzilla.mozilla.org/show_bug.cgi?id=2010943

www.mozilla.org/security/advisories/mfsa2026-13/

www.mozilla.org/security/advisories/mfsa2026-15/

www.mozilla.org/security/advisories/mfsa2026-16/

www.mozilla.org/security/advisories/mfsa2026-17/

cve.org (CVE-2026-2783)

nvd.nist.gov (CVE-2026-2783)

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