Improper Input Validation
CVE-2026-9903
Summary
Insufficient validation of untrusted input in Site Isolation in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted MHTML page. (Chromium security severity: High)
- HIGH
- NETWORK
- LOW
- UNCHANGED
- REQUIRED
- NONE
- LOW
- LOW
CWE-20 - 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.
Advisory Timeline
- Published
