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 Chrome's isolated web app feature allows a remote attacker to bypass the content‑security‑policy header by serving a crafted HTML page. This flaw is an instance of Improper Limitation of the Impact of an Attack (CWE‑693) and can enable the execution of malicious scripts within an isolated web app context.

Affected Systems

All users running Google Chrome versions earlier than 150.0.7871.47 who use the isolated web app feature on any supported operating system are affected. 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. The EPSS score of <1% suggests a low likelihood of exploitation. The vulnerability is not listed in CISA's KEV catalog. The likely attack vector requires a malicious HTML document that a user opens within an isolated web app context to trigger the CSP bypass, making it a remote, content‑based exploit.

Generated by OpenCVE AI on August 2, 2026 at 00:43 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade to Chrome 150.0.7871.47 or later to apply the corrected CSP enforcement.
  • If an upgrade cannot be performed immediately, disable or restrict the use of isolated web apps via enterprise policy settings.
  • Ensure any remaining isolated web app contexts are configured with strict content‑security‑policy headers to limit the impact of a potential bypass.

Generated by OpenCVE AI on August 2, 2026 at 00:43 UTC.

Tracking

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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

Sun, 02 Aug 2026 01:00:00 +0000

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

Sun, 26 Jul 2026 00:00:00 +0000

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

Wed, 22 Jul 2026 16:00:00 +0000

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

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: 2026-08-02T00:45:03Z

Weaknesses
  • CWE-693

    Protection Mechanism Failure