CVE-2026-11666: Insufficient validation of untrusted input in Google Chrome
CVE-2026-11666 is a vulnerability in Google Chrome prior to version 149. 0. 7827. 103 involving insufficient validation of untrusted input. This flaw allows a remote attacker to perform UI spoofing by crafting a malicious HTML page. The vulnerability is categorized with high severity by Chromium security but has no CVSS score assigned. There are no known exploits in the wild. The vendor has published an advisory indicating the issue is addressed in Chrome version 149. 0. 7827.
AI Analysis
Technical Summary
This vulnerability in Google Chrome involves insufficient validation of untrusted input, which enables a remote attacker to conduct UI spoofing attacks via a specially crafted HTML page. The issue affects Chrome versions prior to 149.0.7827.103. UI spoofing can mislead users by presenting deceptive user interface elements, potentially facilitating phishing or other social engineering attacks. The vulnerability is marked with high severity by Chromium security. The vendor advisory confirms that the issue is fixed in Chrome 149.0.7827.103.
Potential Impact
Successful exploitation allows an attacker to perform UI spoofing, potentially deceiving users into interacting with fraudulent interface elements. This can lead to user confusion and may facilitate phishing or other social engineering attacks. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Users and administrators should update Google Chrome to version 149.0.7827.103 or later, where this vulnerability has been fixed. Since this is a client-side application vulnerability, applying the official update is the recommended and effective mitigation. No additional vendor-recommended mitigations are indicated.
CVE-2026-11666: Insufficient validation of untrusted input in Google Chrome
Description
CVE-2026-11666 is a vulnerability in Google Chrome prior to version 149. 0. 7827. 103 involving insufficient validation of untrusted input. This flaw allows a remote attacker to perform UI spoofing by crafting a malicious HTML page. The vulnerability is categorized with high severity by Chromium security but has no CVSS score assigned. There are no known exploits in the wild. The vendor has published an advisory indicating the issue is addressed in Chrome version 149. 0. 7827.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Google Chrome involves insufficient validation of untrusted input, which enables a remote attacker to conduct UI spoofing attacks via a specially crafted HTML page. The issue affects Chrome versions prior to 149.0.7827.103. UI spoofing can mislead users by presenting deceptive user interface elements, potentially facilitating phishing or other social engineering attacks. The vulnerability is marked with high severity by Chromium security. The vendor advisory confirms that the issue is fixed in Chrome 149.0.7827.103.
Potential Impact
Successful exploitation allows an attacker to perform UI spoofing, potentially deceiving users into interacting with fraudulent interface elements. This can lead to user confusion and may facilitate phishing or other social engineering attacks. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Users and administrators should update Google Chrome to version 149.0.7827.103 or later, where this vulnerability has been fixed. Since this is a client-side application vulnerability, applying the official update is the recommended and effective mitigation. No additional vendor-recommended mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-06-08T21:33:45.727Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html","vendor":"Google"}]
Threat ID: 6a2754e6e29bf47b50c4c36e
Added to database: 6/8/2026, 11:48:54 PM
Last enriched: 6/9/2026, 12:19:39 AM
Last updated: 6/9/2026, 4:59:29 AM
Views: 2
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