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

The vulnerability is a use-after-free flaw in the WebAppInstalls component of Google Chrome. A crafted HTML page can trigger the bug, allowing an attacker to execute arbitrary code with the privileges of the browser process and escape the sandbox, resulting in full system compromise.

Affected Systems

Google Chrome versions earlier than 153.0.8010.47 are affected. The flaw exists in the WebAppInstalls subsystem and applies to any Chrome installation that permits web app installation pages.

Risk and Exploitability

The severity is high with a CVSS score of 9.6, but the EPSS score of less than 1% indicates the current probability of exploitation is low. The vulnerability is not listed in the CISA KEV catalog. A likely attack vector is a maliciously crafted web page that a user visits, which causes the use-after-free bug to run code outside the browser sandbox.

Generated by OpenCVE AI on September 23, 2026 at 16:51 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Google Chrome to version 153.0.8010.47 or newer.
  • If an immediate upgrade is not feasible, block or disable the Web App Installs feature through browser settings or enterprise policy to prevent the bug from being triggered.
  • Maintain content security policies that restrict inline script execution on web app installation pages to limit the effectiveness of crafted HTML attacks.

Generated by OpenCVE AI on September 23, 2026 at 16:51 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4790-1 chromium security update
Debian DSA Debian DSA DSA-6506-1 chromium security update
History

Wed, 23 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Title chromium-browser: chromium-browser: Use after free in WebAppInstalls
Weaknesses CWE-825
References
Metrics threat_severity

None

 threat_severity

Important

Fri, 18 Sep 2026 13:30:00 +0000

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

Thu, 17 Sep 2026 13:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

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 : Analyzed

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

Modified: 2026-09-17T13:37:36.617

Link: CVE-2026-91710

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-15T20:41:32Z

Links: CVE-2026-91710 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-23T17:00:08Z

Weaknesses