Description
Incorrect authorization in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to potentially execute arbitrary code outside the sandbox via a crafted Chrome extension. (Chromium security severity: Medium)
Published: 2026-10-20
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Patch ASAP
AI Analysis

Impact

The vulnerability is an incorrect authorization check in Chrome extensions prior to version 156.0.8078.47. A remote attacker who compromises the renderer process and uses social engineering can craft a malicious Chrome extension that escapes the browser sandbox and executes arbitrary code on the victim’s machine. This weakness is defined as CWE‑863.

Affected Systems

The flaw affects all desktop installations of Google Chrome earlier than 156.0.8078.47 on all supported operating systems.

Risk and Exploitability

The CVSS score of 8.8 signals high severity, while the EPSS score of < 1% indicates a low likelihood of exploitation. The vulnerability is not listed in CISA’s KEV catalog. An attacker needs control of the renderer process and must persuade a user to install a crafted extension, a scenario that is technically feasible but not guaranteed.

Generated by OpenCVE AI on November 4, 2026 at 12:09 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Google Chrome to version 156.0.8078.47 or newer using the official update channels.
  • Remove or disable unnecessary or suspicious extensions from the browser to reduce the attack surface.
  • In managed environments enforce a whitelist policy for extensions and block all others to prevent installation of potentially malicious code.

Generated by OpenCVE AI on November 4, 2026 at 12:09 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 12:30:00 +0000

Type Values Removed Values Added
Title Uncontrolled Buffer Overrun in Chrome Extensions Enables Remote Code Execution

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

Type Values Removed Values Added
Weaknesses CWE-119

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

Type Values Removed Values Added
Description Memory corruption in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium) Incorrect authorization in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to potentially execute arbitrary code outside the sandbox via a crafted Chrome extension. (Chromium security severity: Medium)
Weaknesses CWE-863

Thu, 22 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
Title Uncontrolled Buffer Overrun in Chrome Extensions Enables Remote Code Execution

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 Memory corruption in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
Weaknesses CWE-119
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-11-03T21:20:43.470Z

Reserved: 2026-10-19T23:14:19.974Z

Link: CVE-2026-113272

cve-icon Vulnrichment

Updated: 2026-10-20T23:13:14.499Z

cve-icon NVD

Status : Modified

Published: 2026-10-20T22:19:21.003

Modified: 2026-11-03T22:19:03.043

Link: CVE-2026-113272

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T12:15:13Z

Weaknesses