CVE-2026-13871 - Vulnerability Details

Description

Insufficient policy enforcement in GuestView in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)

Published: 2026-06-30

Score: 6.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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
`150.0.7871.47`	affected	< 150.0.7871.47

No data.

Vendor Product Confidence Versions

Google

Chrome

100%

Version	Status	Scheme	Platform
`[150.0.7871.47,150.0.7871.47)`	affected	generic	—

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
Debian DLA	DLA-4672-1	chromium security update
Debian DSA	DSA-6378-1	chromium security update

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

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 0.00272.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html
https://issues.chromium.org/issues/497961376

History

Thu, 16 Jul 2026 00:30:00 +0000

Type	Values Removed	Values Added
Title	GuestView Site Isolation Bypass via Compromised Renderer

Tue, 14 Jul 2026 21:00:00 +0000

Type	Values Removed	Values Added
Title		GuestView Site Isolation Bypass via Compromised Renderer

Mon, 13 Jul 2026 16:30:00 +0000

Type	Values Removed	Values Added
Title	GuestView Policy Enforcement Bypass Facilitating Site Isolation Escape

Sat, 11 Jul 2026 17:30:00 +0000

Type	Values Removed	Values Added
Title		GuestView Policy Enforcement Bypass Facilitating Site Isolation Escape

Fri, 10 Jul 2026 18:30:00 +0000

Type	Values Removed	Values Added
Title	GuestView Policy Bypass Allows Site Isolation Escape

Thu, 09 Jul 2026 22:00:00 +0000

Type	Values Removed	Values Added
Title		GuestView Policy Bypass Allows Site Isolation Escape

Thu, 09 Jul 2026 03:15:00 +0000

Type	Values Removed	Values Added
Title	GuestView Policy Enforcement Bypass in Google Chrome Enables Site Isolation Escape

Tue, 07 Jul 2026 04:45:00 +0000

Type	Values Removed	Values Added
Title		GuestView Policy Enforcement Bypass in Google Chrome Enables Site Isolation Escape

Mon, 06 Jul 2026 16:45:00 +0000

Type	Values Removed	Values Added
Title	GuestView Policy Enforcement Bypass in Chrome Enables Site Isolation Escape

Sun, 05 Jul 2026 23:30:00 +0000

Type	Values Removed	Values Added
Title		GuestView Policy Enforcement Bypass in Chrome Enables Site Isolation Escape

Sun, 05 Jul 2026 15:15:00 +0000

Type	Values Removed	Values Added
Title	GuestView Policy Enforcement Bypass in Google Chrome Enables Site Isolation Escalation

Sat, 04 Jul 2026 23:45:00 +0000

Type	Values Removed	Values Added
Title		GuestView Policy Enforcement Bypass in Google Chrome Enables Site Isolation Escalation

Sat, 04 Jul 2026 04:30:00 +0000

Type	Values Removed	Values Added
Title	Chrome GuestView Policy Bypass Enables Site Isolation Escape

Fri, 03 Jul 2026 17:00:00 +0000

Type	Values Removed	Values Added
Title		Chrome GuestView Policy Bypass Enables Site Isolation Escape

Fri, 03 Jul 2026 09:30:00 +0000

Type	Values Removed	Values Added
Title	GuestView Policy Enforcement Bypass in Google Chrome

Thu, 02 Jul 2026 20:15:00 +0000

Type	Values Removed	Values Added
Title		GuestView Policy Enforcement Bypass in Google Chrome

Thu, 02 Jul 2026 12:00:00 +0000

Type	Values Removed	Values Added
Title	GuestView Policy Enforcement Bypass Allowing Site Isolation Escape in Google Chrome

Thu, 02 Jul 2026 05:00:00 +0000

Type	Values Removed	Values Added
Title		GuestView Policy Enforcement Bypass Allowing Site Isolation Escape in Google Chrome

Wed, 01 Jul 2026 19:45:00 +0000

Type	Values Removed	Values Added
Title	GuestView Policy Enforcement Bypass Leading to Site Isolation Escape
Weaknesses	CWE-284

Wed, 01 Jul 2026 15:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-602
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 01 Jul 2026 14:45:00 +0000

Type	Values Removed	Values Added
Title		GuestView Policy Enforcement Bypass Leading to Site Isolation Escape
Weaknesses		CWE-284

Wed, 01 Jul 2026 10:45:00 +0000

Type	Values Removed	Values Added
Title	GuestView Policy Enforcement Bypass Allows Site Isolation Escape
Weaknesses	CWE-284

Wed, 01 Jul 2026 09:00:00 +0000

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

Wed, 01 Jul 2026 01:30:00 +0000

Type	Values Removed	Values Added
Title		GuestView Policy Enforcement Bypass Allows Site Isolation Escape
Weaknesses		CWE-284

Tue, 30 Jun 2026 23:15:00 +0000

Type	Values Removed	Values Added
Description		Insufficient policy enforcement in GuestView in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
References		https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html https://issues.chromium.org/issues/497961376

Subscriptions

Google Chrome

MITRE

Status: PUBLISHED

Assigner: Chrome

Published: 2026-06-30T22:38:03.856Z

Updated: 2026-07-01T14:20:28.798Z

Reserved: 2026-06-29T23:03:38.594Z

Link: CVE-2026-13871

Vulnrichment

Updated: 2026-07-01T14:20:19.589Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-07-16T00:15:06Z

Weaknesses

CWE-602

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction Required

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

JSON object

JSON object

JSON object

JSON object

JSON object