Description
UI misrepresentation in FullScreen in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to spoof UI elements via a crafted HTML page. (Chromium security severity: Low)
Published: 2026-10-20
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: UI Spoofing
Action: Immediate Patch
AI Analysis

Impact

The flaw is a UI misrepresentation bug triggered during FullScreen transitions in Google Chrome before 156.0.8078.47. It allows a remote attacker to spoof UI elements by delivering a specially crafted HTML page. This misrepresentation could be used to trick users into interacting with a fake interface, but it does not enable arbitrary code execution.

Affected Systems

All installations of Google Chrome older than version 156.0.8078.47 are vulnerable, regardless of the operating system.

Risk and Exploitability

The CVSS score of 8.8 denotes high severity, while the EPSS score of less than 1% indicates a low probability of exploitation at present. The vulnerability is not listed in the CISA KEV catalog. Based on the description, the attack vector is inferred to be a malicious or unsuspecting user loading a crafted web page that triggers the FullScreen transition. The primary impact is UI spoofing, which could enable deceptive interactions but does not provide code execution privileges.

Generated by OpenCVE AI on November 4, 2026 at 07:49 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Install the latest Chrome update, version 156.0.8078.47 or newer, on all affected systems.
  • If an immediate upgrade is not possible, deploy an enterprise policy that blocks or restricts FullScreen requests from untrusted or non‑HTTPS origins.
  • Employ network‑level controls, such as web filtering or host‑based blocklists, to limit client access to domains known to serve malicious or suspicious content that could host crafted pages.

Generated by OpenCVE AI on November 4, 2026 at 07:49 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 08:15:00 +0000

Type Values Removed Values Added
Title FullScreen UI Spoofing in Google Chrome

Wed, 04 Nov 2026 03:30:00 +0000

Type Values Removed Values Added
Title FullScreen Buffer Overflow Enabling Remote Code Execution in Chrome

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 FullScreen 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: Low) UI misrepresentation in FullScreen in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to spoof UI elements via a crafted HTML page. (Chromium security severity: Low)
Weaknesses CWE-451

Thu, 22 Oct 2026 13:15:00 +0000

Type Values Removed Values Added
Title FullScreen Buffer Overflow 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

Tue, 20 Oct 2026 23:30:00 +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 FullScreen 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: Low)
Weaknesses CWE-119
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-11-03T21:21:09.263Z

Reserved: 2026-10-19T23:16:01.332Z

Link: CVE-2026-113291

cve-icon Vulnrichment

Updated: 2026-10-20T22:54:59.872Z

cve-icon NVD

Status : Modified

Published: 2026-10-20T22:19:23.170

Modified: 2026-11-03T22:19:06.540

Link: CVE-2026-113291

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T08:00:09Z

Weaknesses
  • CWE-451

    User Interface (UI) Misrepresentation of Critical Information