Description
Use after free in ServiceWorker in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Low)
Published: 2026-08-25
Score: 9.6 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Use-after-free leading to potential arbitrary code execution outside the sandbox via a crafted HTML page
Action: Patch Now
AI Analysis

Impact

The vulnerability is a use-after-free bug in the ServiceWorker implementation of Google Chrome. The flaw allows a malicious web page to reference freed memory, potentially enabling execution of arbitrary code outside the browser sandbox. This type of defect is captured by CWE-416 and can compromise confidentiality, integrity, and availability if successfully exploited.

Affected Systems

All users running Google Chrome versions earlier than 152.0.7977.65 are affected. The issue was reported for Chrome prior to the 152.0.7977.65 release and is fixed in that update and later releases.

Risk and Exploitability

Chromium lists the defect as High severity with a CVSS score of 9.6, and no exploit has been publicly documented. The EPSS score is unavailable, and the vulnerability is not in the CISA KEV catalog, indicating limited observed exploitation. Nonetheless, a crafted HTML page delivered by a remote website can trigger the use-after-free with only standard activity, making the attack feasible from the user’s machine.

Generated by OpenCVE AI on August 26, 2026 at 02:57 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update Chrome to version 152.0.7977.65 or later to apply the patch
  • If ServiceWorkers are not required for your workflow, disable the ServiceWorker feature via chrome://flags or enterprise policy to remove the attack surface
  • Ensure that browsers are automatically kept current by enabling auto‑updates or enforcing updates through group policy or configuration management tools

Generated by OpenCVE AI on August 26, 2026 at 02:57 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4771-1 chromium security update
Debian DSA Debian DSA DSA-6482-1 chromium security update
History

Wed, 26 Aug 2026 20:45:00 +0000

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

Wed, 26 Aug 2026 03:15:00 +0000

Type Values Removed Values Added
Title ServiceWorker Use-After-Free Allows Remote Code Execution Outside Sandbox

Wed, 26 Aug 2026 01:30:00 +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'}

Wed, 26 Aug 2026 00:30:00 +0000

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

Wed, 26 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
Title ServiceWorker Use-After-Free Allows Remote Code Execution Outside Sandbox

Tue, 25 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
Description Use after free in ServiceWorker in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Low)
Weaknesses CWE-416
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-08-27T03:55:28.116Z

Reserved: 2026-08-25T06:08:23.360Z

Link: CVE-2026-79056

cve-icon Vulnrichment

Updated: 2026-08-26T00:15:49.587Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-25T21:18:01.487

Modified: 2026-08-27T04:17:16.413

Link: CVE-2026-79056

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-26T03:00:10Z

Weaknesses