Input Validation Vulnerability in Google Chrome Revealed by Improper Handling
CVE-2026-121236

8.8HIGH

Key Information:

Vendor

Google
Status
Chrome
Vendor
CVE Published:
3 November 2026

What is CVE-2026-121236?

An input validation flaw in Google Chrome prior to version 157.0.8103.38 enabled remote attackers to bypass web origin policies through a specially crafted HTML page. This vulnerability could potentially allow malicious sites to perform unauthorized actions or access sensitive data, highlighting the importance of maintaining up-to-date browser security to mitigate such risks.

Affected Version(s)

Chrome 157.0.8103.38

References

https://chromereleases.googleblog.com/2026/11/stable-chan...
https://issues.chromium.org/issues/553260839

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.