Description
Insufficient policy enforcement in Isolated Web Apps in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Medium)
Published: 2026-06-30
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

Insufficient policy enforcement in Google Chrome Isolated Web Apps prior to version 150.0.7871.47 lets a remote attacker bypass the content‑security‑policy header by delivering a crafted HTML page. This flaw is an Improper Limitation of the Impact of an Attack (CWE‑693) and can allow the execution of malicious scripts or other unauthorized content within the isolated environment.

Affected Systems

All users of Google Chrome versions earlier than 150.0.7871.47 on any operating system are affected, because the vulnerability applies to every isolated web app environment in the browser regardless of platform.

Risk and Exploitability

The CVSS score of 6.5 indicates medium severity, while the EPSS score of <1% suggests a low likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog. Based on the description, it can be inferred that an attacker must supply a malicious HTML document that a user opens within an isolated web app to trigger the CSP bypass.

Generated by OpenCVE AI on July 14, 2026 at 20:40 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade Chrome to version 150.0.7871.47 or later to apply the correct CSP enforcement for isolated web apps
  • If an upgrade is delayed, restrict the use of isolated web apps or block untrusted origins through enterprise policy settings
  • Review and enforce strict content‑security‑policy headers for any remaining isolated web app contexts to limit the impact of a potential bypass

Generated by OpenCVE AI on July 14, 2026 at 20:40 UTC.

Tracking

Sign in to view the affected projects.

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

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

Type Values Removed Values Added
Title Content Security Policy Bypass in Chrome Isolated Web Apps

Mon, 13 Jul 2026 05:45:00 +0000

Type Values Removed Values Added
Title Content Security Policy Bypass in Chrome Isolated Web Apps

Sat, 11 Jul 2026 03:00:00 +0000

Type Values Removed Values Added
Title Chrome Isolated Web Apps CSP Bypass via Crafted HTML

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

Type Values Removed Values Added
Title Chrome Isolated Web Apps CSP Bypass via Crafted HTML

Tue, 07 Jul 2026 22:00:00 +0000

Type Values Removed Values Added
Title CSP Bypass in Google Chrome Isolated Web Apps via Crafted HTML Page

Mon, 06 Jul 2026 21:00:00 +0000

Type Values Removed Values Added
Title CSP Bypass in Google Chrome Isolated Web Apps via Crafted HTML Page

Mon, 06 Jul 2026 04:00:00 +0000

Type Values Removed Values Added
Title Content Security Policy Bypass via Crafted HTML in Chrome Isolated Web Apps

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

Type Values Removed Values Added
Title Content Security Policy Bypass via Crafted HTML in Chrome Isolated Web Apps

Sat, 04 Jul 2026 20:15:00 +0000

Type Values Removed Values Added
Title Insufficient CSP enforcement allows bypass in Chrome Isolated Web Apps

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

Type Values Removed Values Added
Title Insufficient CSP enforcement allows bypass in Chrome Isolated Web Apps

Fri, 03 Jul 2026 12:45:00 +0000

Type Values Removed Values Added
Title Content Security Policy Bypass in Google Chrome Isolated Web Apps

Thu, 02 Jul 2026 23:00:00 +0000

Type Values Removed Values Added
Title Content Security Policy Bypass in Google Chrome Isolated Web Apps

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

Type Values Removed Values Added
Title CSP Bypass in Chrome Isolated Web Apps via Crafted HTML

Wed, 01 Jul 2026 22:45:00 +0000

Type Values Removed Values Added
Title CSP Bypass in Chrome Isolated Web Apps via Crafted HTML
Weaknesses CWE-79

Wed, 01 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-693
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 12:45:00 +0000

Type Values Removed Values Added
Title Content Security Policy Bypass in Chrome Isolated Web Apps via Crafted HTML
Weaknesses CWE-79

Wed, 01 Jul 2026 11:30:00 +0000

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

Wed, 01 Jul 2026 03:30:00 +0000

Type Values Removed Values Added
Title Content Security Policy Bypass in Chrome Isolated Web Apps via Crafted HTML

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

Type Values Removed Values Added
Description Insufficient policy enforcement in Isolated Web Apps in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Medium)
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-07-01T15:20:53.905Z

Reserved: 2026-06-29T23:03:42.297Z

Link: CVE-2026-13886

cve-icon Vulnrichment

Updated: 2026-07-01T15:20:47.325Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-14T20:45:03Z

Weaknesses
  • CWE-693

    Protection Mechanism Failure