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same-origin policy
About this tag
The same-origin policy is a fundamental browser security mechanism that restricts how scripts from one origin can interact with resources from another origin. On WindowsForum.com, discussions cover vulnerabilities that bypass this policy, such as CVE-2026-11226 in Chrome for Android, which exploits a PreviewTab policy-enforcement flaw to bypass same-origin restrictions after specific user gestures. Another thread examines CVE-2026-5919, a WebSocket validation bug in Chrome that allows a compromised renderer process to bypass the same-origin policy via a crafted HTML page. These threads highlight how low-severity Chromium issues can still pose operational risks, especially as browser features like preview surfaces and mobile gestures expand the attack surface.
Google Chrome for Android before version 149.0.7827.53 contained CVE-2026-11226, a PreviewTab policy-enforcement flaw disclosed on June 4, 2026, that could let a remote attacker bypass the browser’s same-origin policy after persuading a user to perform specific UI gestures. The vulnerability is...
Chromium’s latest browser security disclosure, CVE-2026-5919, is a reminder that “low” severity does not always mean low operational importance. Microsoft’s Security Update Guide records the flaw as insufficient validation of untrusted input in WebSockets in Google Chrome prior to 147.0.7727.55...