CVE-2026-13999 Other in Chrome

Medium 4.3 Published Updated

An attacker can perform UI spoofing in Google Chrome by convincing a user to install a malicious extension due to insufficient input validation.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2026-13999?

CVE-2026-13999 is a medium-severity vulnerability in Google Chrome, published on 30 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Insufficient validation of untrusted input in Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to perform UI spoofing via a crafted Chrome Extension. (Chromium security severity: Medium)

Weakness: CWE-20

Which versions are affected by CVE-2026-13999?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-13999?

Upgrade to a fixed version.

Is CVE-2026-13999 being exploited?

There is no known exploitation of CVE-2026-13999 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-13999, ECHO-ea49-a893-9a45, GHSA-r685-pmg3-7cqj, MINI-cj25-3fqc-7x6q.

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