CVE-2026-2778
- Source
- https://cve.org/CVERecord?id=CVE-2026-2778
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2778.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-2778
- Downstream
- Related
- Published
- 2026-02-24T14:16:26.230Z
- Modified
- 2026-03-14T12:47:45.765570Z
- Severity
-
- 10.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
- References
-
- https://www.mozilla.org/security/advisories/mfsa2026-16/
- https://www.mozilla.org/security/advisories/mfsa2026-17/
- 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://bugzilla.mozilla.org/show_bug.cgi?id=2016358
Affected packages
Git /
Database specific
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "115.33.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "148.0"
}
]
},
{
"events": [
{
"introduced": "128.0"
},
{
"fixed": "140.8.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "140.8.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "148.0"
}
]
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2778.json"