CVE-2026-19153
Description
A flaw was found in Google Chrome. Insufficient validation of untrusted input in the Workers component could allow a remote attacker, who has already compromised the renderer process, to bypass site isolation. This could enable the attacker to access sensitive information or further compromise the user's system.
Statement
Important: This flaw in Chromium-based browsers allows a remote attacker to bypass site isolation. Exploitation requires a compromised renderer process and a specially crafted HTML page, enabling the attacker to circumvent a critical security boundary designed to protect user data.
Understanding the Weakness (CWE)
Confidentiality,Access Control,Availability,Other
Technical Impact: Bypass Protection Mechanism; Gain Privileges or Assume Identity; Varies by Context
Attackers can bypass the security decision to access whatever is being protected. The consequences will depend on the associated functionality, but they can range from granting additional privileges to untrusted users to bypassing important security checks. Ultimately, this weakness may lead to exposure or modification of sensitive data, system crash, or execution of arbitrary code.
Frequently Asked Questions
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