Description
Race condition in ServiceWorker in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
Published: 2026-10-20
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution within Chrome Sandbox
Action: Patch Immediately
AI Analysis

Impact

A race condition in the ServiceWorker implementation of Google Chrome allows a remote attacker to bypass site isolation through a specially crafted HTML page, potentially enabling execution of code inside the browser's sandbox. This flaw is classified as CWE‑362.

Affected Systems

All Google Chrome browsers on Windows, macOS, Linux, Android, and Chrome OS running a version earlier than 156.0.8078.47 are affected. Versions 156.0.8078.47 and newer contain the fix.

Risk and Exploitability

The CVSS score of 8.8 classifies this vulnerability as high severity. The EPSS score of <1% indicates a very low probability of exploitation at this time. This issue is not listed in the CISA KEV catalog. Based on the description, it is inferred that a remote attacker could leverage the flaw by hosting a malicious HTML page that a user visits, without requiring local privileges or additional software installation.

Generated by OpenCVE AI on November 4, 2026 at 13:01 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Google Chrome to version 156.0.8078.47 or later to apply the patch that fixes the ServiceWorker race condition issue.
  • If an immediate update is not feasible, temporarily disable ServiceWorkers in Chrome using an enterprise policy or a browser extension that blocks the feature until the browser is updated.
  • Keep the browser subscription to the stable channel and monitor the official Chrome release blog for future security updates to stay protected.

Generated by OpenCVE AI on November 4, 2026 at 13:01 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4853-1 chromium security update
Debian DSA Debian DSA DSA-6577-1 chromium security update
History

Wed, 04 Nov 2026 13:30:00 +0000

Type Values Removed Values Added
Title Use-After-Free in ServiceWorker Enabling Remote Code Execution in Chrome

Tue, 03 Nov 2026 22:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Tue, 03 Nov 2026 21:30:00 +0000

Type Values Removed Values Added
Description Use after free in ServiceWorker in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium) Race condition in ServiceWorker in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-362

Fri, 23 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Title Use-After-Free in ServiceWorker Enabling Remote Code Execution in Chrome

Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Vendors & Products Google
Google chrome

Wed, 21 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

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

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description Use after free in ServiceWorker in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-416
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-11-03T21:20:36.045Z

Reserved: 2026-10-19T23:17:25.671Z

Link: CVE-2026-113311

cve-icon Vulnrichment

Updated: 2026-10-20T23:19:46.981Z

cve-icon NVD

Status : Modified

Published: 2026-10-20T22:19:25.357

Modified: 2026-11-03T22:19:10.150

Link: CVE-2026-113311

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T13:15:14Z

Weaknesses
  • CWE-362

    Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')