Use After Free Vulnerability in Google Chrome
CVE-2026-6300

8.8HIGH

Key Information:

Vendor

Google
Status
Chrome
Vendor
CVE Published:
15 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6300?

A use after free vulnerability in the CSS handling of Google Chrome versions prior to 147.0.7727.101 enables remote attackers to execute arbitrary code. This vulnerability can be triggered through a maliciously crafted HTML document, allowing unauthorized actions within a sandboxed environment, which may lead to significant security breaches.

Affected Version(s)

Chrome 147.0.7727.101

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-6300-PoC
Created by notthemystery

References

https://chromereleases.googleblog.com/2026/04/stable-chan...
https://issues.chromium.org/issues/491994185

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

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.