CVE-2026-12456
MediumCVSS 4.2Exploitation Probability (EPSS)
Low risk8th percentile — higher than 8% of all known CVEs
Summary
Inappropriate implementation in Extensions in Google Chrome prior to version 149.0.7827.155 allowed an attacker who convinced a user to install a malicious extension to bypass same origin policy via a crafted Chrome Extension.
Risk Assessment
An attacker could exploit this vulnerability to gain access to user data or perform unauthorized actions within the context of the installed extension, posing a significant security risk to the organization.
Recommendation
It is recommended to update Google Chrome to the latest version to mitigate the risk associated with this vulnerability and to conduct an audit of installed extensions.
Original NVD description (English source)
Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed an attacker who convinced a user to install a malicious extension to bypass same origin policy via a crafted Chrome Extension. (Chromium security severity: High)