{"id":"CVE-2026-118027","title":"Frame poisoning in the Layout component","summary":"Frame poisoning in the Layout component. This vulnerability was fixed in Firefox ESR 115.44.","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","cvssSource":"adp","vendor":"Mozilla","product":"Firefox","affected":["Firefox"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-04T20:54:22.394431Z"},"published":"2026-10-27","updated":"2026-11-04","sourceUpdated":"2026-11-04T20:55:12.108Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118027","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2045606"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-119/"}],"tags":["cve.org"],"epss":0.00133,"epssPercentile":0.02852,"ingestedAt":"2026-10-27T16:11:59.436Z","slug":"CVE-2026-118027","body":"## Overview\n\nFrame poisoning in the Layout component. This vulnerability was fixed in Firefox ESR 115.44.\n\n## Affected\n\n- `Firefox`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":234523,"id":"CVE-2026-118027","ts":1793914637740,"field":"cvss","old":null,"new":"9.1"},{"seq":234522,"id":"CVE-2026-118027","ts":1793914637740,"field":"severity","old":"none","new":"critical"}]}