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Description

Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.

PUBLISHED Reserved 2026-05-12 | Published 2026-05-12 | Updated 2026-05-19 | Assigner mozilla

Product status

115.36 (rpm)
unaffected

140.11 (rpm)
unaffected

150.0.3 (rpm)
unaffected

140.11 (rpm)
unaffected

Credits

ggwhyp

References

bugzilla.mozilla.org/show_bug.cgi?id=2038679

www.mozilla.org/security/advisories/mfsa2026-45/

www.mozilla.org/security/advisories/mfsa2026-47/

www.mozilla.org/security/advisories/mfsa2026-48/

www.mozilla.org/security/advisories/mfsa2026-51/

cve.org (CVE-2026-8401)

nvd.nist.gov (CVE-2026-8401)

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