{"id":"CVE-2026-120987","title":"Whale Browser before 5.39.412.57 allows an attacker to bypass the iframe sandbox in a dual-tab environment.","summary":"Whale Browser before 5.39.412.57 allows an attacker to bypass the iframe sandbox in a dual-tab environment.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","cvssSource":"adp","cwe":["CWE-346"],"vendor":"NAVER","product":"NAVER Whale browser","affected":["whale_browser (all versions)"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-06T18:41:32.606750Z"},"published":"2026-11-03","updated":"2026-11-06","sourceUpdated":"2026-11-06T18:41:55.449Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120987","references":[{"url":"https://cve.naver.com/detail/cve-2026-120987.html"}],"tags":["cve.org"],"epss":0.00145,"epssPercentile":0.03782,"ingestedAt":"2026-11-05T19:30:42.925Z","slug":"CVE-2026-120987","body":"## Overview\n\nWhale Browser before 5.39.412.57 allows an attacker to bypass the iframe sandbox in a dual-tab environment.\n\n## Affected\n\n- `whale_browser (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":235552,"id":"CVE-2026-120987","ts":1793991733179,"field":"cvss","old":null,"new":"7.5"},{"seq":235551,"id":"CVE-2026-120987","ts":1793991733179,"field":"severity","old":"none","new":"high"}]}