CVE-2025-30466

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{}

{"analysis": {"en": {"generated_at": "2026-04-28T11:15:16.944499+00:00", "value": {"mitigation_remediation": ["Apply the latest updates for Safari, iOS, iPadOS, macOS, and visionOS (18.4 / 15.4 / 2.4).", "Ensure all devices receiving these operating systems are configured for automatic updates or arrange manual installation to deploy the patches promptly.", "As an interim defensive measure, consider restricting cross\u2011origin requests by configuring browser security settings or employing site\u2011specific content\u2011security policies until the official patch is deployed."], "summary": {"action": "Immediate Patch", "impact": "Same Origin Policy Bypass"}, "threat_synthesis": {"affected_systems": "The flaw affects Apple Safari, iOS, iPadOS, macOS, and visionOS. Versions older than 18.4 for Safari, iOS and iPadOS, 15.4 for macOS, and 2.4 for visionOS remain vulnerable. Devices running these operating systems without the specified updates are at risk.", "description_and_impact": "This vulnerability is a state management flaw that permits a malicious website to circumvent the browser\u2019s Same Origin Policy, potentially allowing unauthorized access to cross\u2011origin resources. The flaw could lead to exfiltration of sensitive data or the execution of scripts in the context of another origin, thereby compromising confidentiality and integrity. The CVSS score of 9.8 indicates a very high severity rating.", "risk_and_exploitability": "The EPSS score of less than 1% suggests that exploitation is currently rare, and the vulnerability is not listed in CISA\u2019s KEV catalog. It is reasonably inferred that a typical attack would involve a user visiting a malicious website, which could exploit the state\u2011management flaw to violate the Same Origin Policy. Given the high CVSS score and the potential for cross\u2011origin manipulation, security professionals should treat this as a critical issue pending the latest updates."}}}}, "created": "2026-04-28T11:15:26.100150+00:00", "title": "Same Origin Policy Bypass via State Management Flaw", "updated": "2026-04-28T11:15:26.100160+00:00", "vendors": []}