Description
Use after free in Accessibility 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: Critical)
Published: 2026-10-20
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

Use‑after‑free in Chrome’s Accessibility subsystem enables an attacker to execute arbitrary code within the browser sandbox via a crafted HTML document. The flaw allows execution of native code inside Chrome’s restricted process, which could lead to compromise of the user’s system if the sandbox is bypassed or elevated.

Affected Systems

Google Chrome versions prior to 156.0.8078.47 are affected. All desktop builds that include the Accessibility module before the specified version are vulnerable.

Risk and Exploitability

The vulnerability has a CVSS score of 8.8, indicating a high severity impact. The EPSS score is 0.48%, and the flaw is not yet listed in CISA KEV. Attackers can exploit it by serving a malicious HTML page that targets the browser’s accessibility handling. Successful exploitation permits execution of code inside the sandbox, providing a focused yet potentially dangerous foothold.

Generated by OpenCVE AI on October 22, 2026 at 20:23 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Google Chrome to 156.0.8078.47 or later, which contains the fixed use‑after‑free fix.
  • Disable Accessibility features or enable them only when necessary to reduce attack surface.
  • Monitor Chrome release channels for additional updates and consider disabling unused browser features until a more comprehensive patch is available.

Generated by OpenCVE AI on October 22, 2026 at 20:23 UTC.

Tracking

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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

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

Type Values Removed Values Added
Title Use‑after‑free in Chrome Accessibility Allows Remote Code Execution via Crafted HTML

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 Accessibility 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: Critical)
Weaknesses CWE-416
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-11-03T21:20:20.142Z

Reserved: 2026-10-19T23:14:17.905Z

Link: CVE-2026-113271

cve-icon Vulnrichment

Updated: 2026-10-20T23:33:39.960Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:19:20.893

Modified: 2026-10-21T17:08:42.093

Link: CVE-2026-113271

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T23:30:13Z

Weaknesses