CVE-2026-118027

Frame poisoning in the Layout component

Published Oct 27, 2026 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Description
Frame poisoning in the Layout component. This vulnerability was fixed in Firefox ESR 115.44.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-451
Metrics cvssV3_1

{'score': 3.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N'}

cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'}

Type Values Removed Values Added
Weaknesses CWE-1007
CWE-79
Type Values Removed Values Added
Weaknesses CWE-825
References
Metrics threat_severity

None

cvssV3_1

{'score': 3.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N'}

threat_severity

Low

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox
Type Values Removed Values Added
Weaknesses CWE-1007
CWE-79
Type Values Removed Values Added
Description Frame poisoning in the Layout component. This vulnerability was fixed in Firefox ESR 115.44.
Title Frame poisoning in the Layout component
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Nov 4, 2026, 8:55 PM
Reserved
Oct 27, 2026, 2:06 PM
Status
Deferred
Published
Oct 27, 2026, 2:17 PM
Modified
Nov 4, 2026, 9:17 PM
Severity
Low
Public date
Oct 27, 2026, 2:06 PM