Description
Use after free in WebAppInstalls in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
Published: 2026-09-15
Score: 9.6 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

Use after free vulnerability in the WebAppInstalls component of Google Chrome allows a remote attacker to in the browser, can cause the browser to execute arbitrary code outside the sandbox. The flaw is a classic use-after-free bug (CWE-416) that bypasses the browser's process isolation, enabling arbitrary code execution and full compromise of the host system.

Affected Systems

Google Chrome versions older than 153.0.8010.47 are affected. The vulnerability exists in the WebAppInstalls subsystem and impacts any installation of Chrome that allows Web App installation pages.

Risk and Exploitability

The vulnerability carries a CVSS score of 9.6, indicating a high severity for remote code execution. The EPSS score is less than 1%, reflecting a low probability of exploitation at present. It is not listed in the CISA KEV catalog. The likely attack vector involves a maliciously crafted web page that a user visits, triggering the use-after-free bug and allowing an attacker to run code with the privileges of the browser process.

Generated by OpenCVE AI on September 16, 2026 at 20:47 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade Google Chrome to version 153.0.8010.47 or newer.
  • If an immediate upgrade is unavailable, block or disable the Web App Installs feature via browser settings or enterprise policy and remove any existing webapp limit script execution and monitor user activity for anomalous behavior.
  • Apply a content security policy (CSP) that disallows inline scripts and restricts remote code loading for web app installation pages to limit the effectiveness of crafted HTML attacks.

Generated by OpenCVE AI on September 16, 2026 at 20:47 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 16 Sep 2026 21:15:00 +0000

Type Values Removed Values Added
Title Use After Free in Web App Installs Enables Remote Code Execution via Crafted HTML Page

Wed, 16 Sep 2026 10:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

ssvc

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

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

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

Tue, 15 Sep 2026 20:45:00 +0000

Type Values Removed Values Added
Description Use after free in WebAppInstalls in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
Weaknesses CWE-416
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-09-17T03:56:01.256Z

Reserved: 2026-09-14T22:51:02.829Z

Link: CVE-2026-91710

cve-icon Vulnrichment

Updated: 2026-09-16T10:06:21.110Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-09-15T21:16:43.800

Modified: 2026-09-17T04:18:04.777

Link: CVE-2026-91710

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-16T21:00:08Z

Weaknesses