CVE-2026-92018

CRITICAL 9.6CVE-2026-92018 · Published 15/09/2026 · updated 06/10/2026

Package	Affected versions	Patched versions
firefox mozilla	`≥ 116.0, < 140.16.0≥ 141.0, < 153.3.0≥ 154.0.0, < 156.0.0< 115.41.0`	`140.16.0153.3.0156.0.0115.41.0`
thunderbird mozilla	`≥ 141.0, < 153.3.0≥ 154.0, < 156.0< 140.16.0`	`153.3.0156.0140.16.0`

Description

Sandbox escape in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.

References

bugzilla.mozilla.org/show_bug.cgi · Permissions Required
mozilla.org/security/advisories/mfsa2026-90 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-91 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-92 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-93 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-94 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-95 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-96 · Vendor Advisory

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