Paper/Archive/CVE-2026-118027

CVE-2026-118027

Mozilla Firefox — Frame poisoning in the Layout component

EPSS 0.1%CVSS 9.1

critical.is priorityof 100

28

CVSS 9.1 (ADP)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 2.9.029 × 200.6 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Frame poisoning in the Layout component. This vulnerability was fixed in Firefox ESR 115.44.

Affected

ProductAffectedFixed inSource

Firefoxsee advisory115.44CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refbugzilla.mozilla.org/show_bug.cgi?id=2045606 refmozilla.org/security/advisories/mfsa2026-119