Description
Improper input validation in Media in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted media file. (Chromium security severity: Medium)
Published: 2026-10-20
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Code Execution outside Sandbox
Action: Apply Patch
AI Analysis

Impact

Improper input validation in Google Chrome’s media handling subsystem, classified as CWE‑20, exposes users to remote attackers who can craft malicious media files. When such a file is loaded, the browser may execute arbitrary code beyond the normal sandbox boundaries, allowing the attacker to run code with the privileges of the Chrome process.

Affected Systems

Chrome Desktop channel installations on Windows, macOS, and Linux with versions prior to 156.0.8078.47 are vulnerable; all supported operating systems share the same media processing code.

Risk and Exploitability

The CVSS score of 8.8 indicates high severity. The EPSS score is below 1% and the flaw is not listed in CISA’s KEV catalog, suggesting limited proven exploitation. Based on the description, the likely attack requires a victim to open a malicious or compromised web page containing a crafted media element; no special privileges beyond the browser context are needed.

Generated by OpenCVE AI on November 4, 2026 at 06:10 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update Google Chrome to version 156.0.8078.47 or later to address the media input validation flaw.
  • Enable automatic updates so that future security patches are applied promptly.
  • If an immediate update is not possible, restrict or block media playback from untrusted sites using group policy or browser extensions to reduce the risk.

Generated by OpenCVE AI on November 4, 2026 at 06:10 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 06:30:00 +0000

Type Values Removed Values Added
Title Improper Media Input Validation Enables External Code Execution in Chrome

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

Type Values Removed Values Added
Title Chrome Media Use‑After‑Free Enables Sandbox Code Execution

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 Media 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) Improper input validation in Media in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted media file. (Chromium security severity: Medium)
Weaknesses CWE-20

Thu, 22 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
Title Chrome Media Use‑After‑Free Enables Sandbox Code Execution

Wed, 21 Oct 2026 17:30:00 +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 Media 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: 2026-11-03T21:21:01.796Z

Reserved: 2026-10-19T22:54:50.401Z

Link: CVE-2026-113065

cve-icon Vulnrichment

Updated: 2026-10-20T23:00:15.686Z

cve-icon NVD

Status : Modified

Published: 2026-10-20T22:18:57.957

Modified: 2026-11-03T22:18:24.977

Link: CVE-2026-113065

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T06:15:12Z

Weaknesses
  • CWE-20

    Improper Input Validation