EXPOSURES › CVE-2026-2778

CVE-2026-2778

CRITICAL

DETAIL

SourceNVD · cve Published2026-02-24 CVSS10.0 Referencehttps://nvd.nist.gov/vuln/detail/CVE-2026-2778 ↗

▸ RECOMMENDED ACTION Critical severity — schedule patching of the affected products.

PLAYERS IMPLICATED

mozilla · vendor firefox · product thunderbird · product

DESCRIPTION

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

AFFECTED FEDRAMP PRODUCTS · 0

No correlated FedRAMP products.