Description
Use after free in WebSockets in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
Published: 2026-10-20
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

Based on the updated CVE description, a use‑after‑free flaw remains in Google Chrome’s WebSocket implementation. The modified description still indicates that a remote attacker can craft a malicious HTML page to trigger the use‑after‑free, potentially allowing execution of arbitrary code outside the sandbox. The flaw corresponds to CWE‑416 and is deemed a medium severity by Chromium, although the CVSS score of 8.8 reflects a high potential impact to affected systems.

Affected Systems

Google Chrome for desktop users running any version before 156.0.8078.47 are vulnerable. No specific operating‑system restrictions are indicated, so all Chrome installations from the stable channel that have not yet applied the 156.0.8078.47 update could be impacted.

Risk and Exploitability

The CVSS score of 8.8 indicates a high potential for impact, and the expected attack vector is remote, mediated by a crafted HTML page. The EPSS score of < 1% indicates a very low but nonzero likelihood of exploitation, but the lack of a KEV listing does not diminish the need for remediation. An attacker who can force a victim’s Chrome browser to load the malicious page could achieve arbitrary code execution with the privileges of the browser sandbox. The vulnerability does not require local access or privileged credentials beyond a normal user’s ability to open a URL.

Generated by OpenCVE AI on November 4, 2026 at 05:38 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Google Chrome to version 156.0.8078.47 or later
  • If an upgrade cannot be performed immediately, configure Chrome to disable the WebSocket feature via group policy or enterprise settings to reduce the attack surface
  • Continue to monitor Google’s release channels for additional security patches and verify that the browser is automatically updating

Generated by OpenCVE AI on November 4, 2026 at 05:38 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

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

Type Values Removed Values Added
Description Use after free in WebSockets 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) Use after free in WebSockets in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Wed, 21 Oct 2026 19:30:00 +0000

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

Wed, 21 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Title chromium-browser: chromium-browser: Use after free in WebSockets
Weaknesses CWE-825
References
Metrics threat_severity

None

threat_severity

Important


Wed, 21 Oct 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Google
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 WebSockets 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

cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-11-03T21:20:59.856Z

Reserved: 2026-10-19T22:52:01.158Z

Link: CVE-2026-113037

cve-icon Vulnrichment

Updated: 2026-10-20T23:01:19.165Z

cve-icon NVD

Status : Modified

Published: 2026-10-20T22:18:54.770

Modified: 2026-11-03T22:18:19.023

Link: CVE-2026-113037

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-20T21:02:30Z

Links: CVE-2026-113037 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T05:45:08Z

Weaknesses