Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00191.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Google Chrome affected
Version Status Constraints
149.0.7827.155 affected < 149.0.7827.155

No data.

No data.

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Project Subscriptions

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6351-1 chromium security update
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html cve-icon
https://issues.chromium.org/issues/517153117 cve-icon
History

Thu, 18 Jun 2026 23:45:00 +0000

Type Values Removed Values Added
Title Site Isolation Bypass via Malicious Renderer Process in Chrome Extensions

Thu, 18 Jun 2026 22:30:00 +0000

Type Values Removed Values Added
Title Chrome Extension Renderer Process Exploitation Allows Site Isolation Bypass
Weaknesses CWE-284

Thu, 18 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
Title Chrome Extension Renderer Process Exploitation Allows Site Isolation Bypass
Weaknesses CWE-284
CWE-693
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 17 Jun 2026 07:00:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome

Wed, 17 Jun 2026 05:15:00 +0000

Type Values Removed Values Added
Description Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-06-17T13:14:47.588Z

Reserved: 2026-06-16T19:38:30.420Z

Link: CVE-2026-12457

cve-icon Vulnrichment

Updated: 2026-06-17T13:14:44.313Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-18T23:30:16Z

Weaknesses