CVE-2026-4458: High Use after free in Extensions
Chromium: CVE-2026-4458 Use after free in Extensions
Other sources
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
— Microsoft
Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: High)
— NVD
Credit
Affected Software
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the severity of CVE-2026-4458?
CVE-2026-4458 has a high severity rating due to a use after free vulnerability in Chrome extensions that could allow attackers to execute arbitrary code.
How do I fix CVE-2026-4458?
To fix CVE-2026-4458, update Google Chrome to version 146.0.7680.153 or later.
Which software is affected by CVE-2026-4458?
CVE-2026-4458 affects versions of Google Chrome prior to 146.0.7680.153 and Microsoft Edge (Chromium-based) prior to 146.0.3856.72.
Can CVE-2026-4458 be exploited remotely?
Yes, CVE-2026-4458 can be exploited remotely if the attacker convinces the user to open a malicious extension.
Is CVE-2026-4458 present in Microsoft Edge?
Yes, CVE-2026-4458 impacts Microsoft Edge as it is based on the Chromium engine that contains this vulnerability.