Moole Vulnerability Database

Find real vulnerabilities before they ship

Critical

CVE-2026-2778

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.

VectorNETWORK

PublishedFeb 24, 2026, 14:16

Published Bysecurity@mozilla.org

Base Score

Score10

Affected Versions

No affected versions found.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2016358
https://www.mozilla.org/security/advisories/mfsa2026-13/
https://www.mozilla.org/security/advisories/mfsa2026-14/
https://www.mozilla.org/security/advisories/mfsa2026-15/
https://www.mozilla.org/security/advisories/mfsa2026-16/
https://www.mozilla.org/security/advisories/mfsa2026-17/

Weakness Type

NVD-CWE-noinfo

CVSS Metrics

Base Score

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Base SeverityCritical

Version

3.1

Attack Vector (AV)

NETWORK