CVE-2026-9891

CRITICAL EPSS 15.6%

Published May 28, 20261mo ago · Modified Jun 17, 20261w ago

9.0 CVSS 3.1

Critical

Published May 28, 2026 1mo ago

Last Modified Jun 17, 2026 1w ago

Description

Use after free in Extensions in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security severity: Critical)

CVSS Details

Base Score

9.0

Exploitability

2.2

Impact

6.0

Vector string

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector Network

Attack Complexity High

Privileges Required None

User Interaction None

Scope Changed

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

15.6% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 5

Vendor	Product	Version	Range
google	chrome	*	<148.0.7778.216
microsoft	windows	*	any
google	chrome	*	<148.0.7778.215
apple	macos	*	any
linux	linux_kernel	*	any

References 2

chromereleases.googleblog.com https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html

Release NotesVendor Advisory
issues.chromium.org https://issues.chromium.org/issues/513508128

Permissions Required

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.