Google Chrome <148.0.7778.216 UI Spoofing via OptimizationGuide Validation
CVE-2026-9986 Published on May 28, 2026
Insufficient validation of untrusted input in OptimizationGuide in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: High)
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2026-9986
Want to know whenever a new CVE is published for Google Chrome? stack.watch will email you.
Affected Versions
Google Chrome:- Version 148.0.7778.216 and below 148.0.7778.216 is affected.