Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Lifecycle Timeline
3DescriptionCVE.org
Insufficient validation of untrusted input in CORS in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to bypass same origin policy via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Insufficient validation of untrusted input in CORS handling in Google Chrome prior to version 148.0.7778.96 allows a remote attacker who has compromised the renderer process to bypass the same-origin policy via a crafted HTML page, potentially leading to unauthorized information disclosure. The vulnerability requires renderer process compromise and user interaction, resulting in a CVSS score of 3.1 (low severity). No public exploit code or active exploitation has been identified at the time of analysis.
Technical ContextAI
The vulnerability exists in the Cross-Origin Resource Sharing (CORS) implementation within Chrome's renderer process. CORS is a security mechanism that controls how web pages from one origin can access resources from another origin. The flaw stems from insufficient validation (CWE-20: Improper Input Validation) of untrusted input when processing CORS policy checks. This allows an attacker who has already compromised the renderer process to craft malicious HTML that bypasses origin policy enforcement. The affected CPE is cpe:2.3:a:google:chrome, indicating the vulnerability affects the Chrome browser across platforms where this component is present.
RemediationAI
Update Google Chrome to version 148.0.7778.96 or later, which contains the vendor-released patch. Users can verify their current version by navigating to chrome://version or chrome://help, where Chrome will automatically check for updates and display the installed version. No workarounds for this vulnerability have been identified; patching is the primary remediation. Organizations can enforce automatic updates via Chrome management policies (chrome://policy on managed devices) to ensure timely deployment across their user base. The patch addresses the insufficient input validation in CORS handling, restoring proper same-origin policy enforcement in the renderer process. Refer to the Chrome stable channel update announcement at https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html and Chromium issue tracker at https://issues.chromium.org/issues/497432281 for additional technical details.
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Same weakness CWE-20 – Improper Input Validation
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-28040