CVE-2026-12456

MEDIUM EPSS 3.5%

Published Jun 17, 20261w ago · Modified Jun 17, 20261w ago

4.2 CVSS 3.1

Medium

Published Jun 17, 2026 1w ago

Last Modified Jun 17, 2026 1w ago

Description

Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed an attacker who convinced a user to install a malicious extension to bypass same origin policy via a crafted Chrome Extension. (Chromium security severity: High)

CVSS Details

Base Score

4.2

Exploitability

1.6

Impact

2.5

Vector string

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

Attack Vector Network

Attack Complexity High

Privileges Required None

User Interaction Required

Scope Unchanged

Confidentiality Low

Integrity Low

Availability None

Threat Intelligence

EPSS Exploit Probability

3.5% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-20 Improper Input Validation Validation

Affected Products 4

Vendor	Product	Version	Range
google	chrome	*	<149.0.7827.155
apple	macos	*	any
linux	linux_kernel	*	any
microsoft	windows	*	any

References 2

chromereleases.googleblog.com https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html

Vendor Advisory
issues.chromium.org https://issues.chromium.org/issues/517124587

Permissions Required

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.