CVE-2026-106331

What it is

Improper input validation in Extensions in Google Chrome prior to 155.0.8059.39 allowed a remote attacker leveraging social engineering to bypass web origin policy into a privileged page via a crafted Chrome extension. (Chromium security severity: Low)

At a glance

Exploitability

Can be exploited over the network without logging in, but needs a user to act. High risk of data tampering.

Exploit odds

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-10-06 19:18 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-13 15:07 UTC Last updatedMost recent change to the record

Details

Published

2026-10-06 19:18 UTC

Last modified

2026-10-13 15:07 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-20 · Improper input validation

Record status

Analyzed

Affected

• Google Chrome < 155.0.8059.39

Attack profile CVSS 3.1 · 6.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None