Description
Use after free in WebRTC 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: Patch Immediately
AI Analysis

Impact

A use‑after‑free flaw in Google Chrome's WebRTC implementation before version 156.0.8078.47 lets a remote attacker serve a specially crafted HTML page that corrupts memory and executes arbitrary code within the sandboxed browser process. The vulnerability, designated CWE‑416, gives the attacker code‑execution privileges inside Chrome, enabling data theft, credential capture, or further compromise of the host system.

Affected Systems

The defect exists in Google Chrome installations that have not yet reached version 156.0.8078.47. While the issue affects all builds (stable, beta, dev, canary), it is commonly inferred that most end users run the stable channel, so the highest risk is seen there; however, any Chrome version before the patch is potentially vulnerable.

Risk and Exploitability

The CVSS score of 8.8 indicates high severity. The EPSS score of <1% suggests a very low probability of exploitation in the wild, and the vulnerability is not listed in the CISA KEV catalog. Nonetheless, the flaw is remotely triggered via a malicious web page, meaning an attacker only needs to entice a user to visit a crafted site; the technical barrier is modest, but the low exploitation probability mitigates overall risk for today.

Generated by OpenCVE AI on November 4, 2026 at 14:53 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 to apply the vendor patch
  • Disable WebRTC by enabling the "WebRTC: Disable WebRTC feature" flag in chrome://flags or enforce it through enterprise policy
  • Deploy Content Security Policies that restrict WebRTC usage and limit script execution for pages that use the feature

Generated by OpenCVE AI on November 4, 2026 at 14:53 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

Wed, 04 Nov 2026 15:15:00 +0000

Type Values Removed Values Added
Title Memory Corruption in Chrome WebRTC 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 WebRTC 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: Critical) Use after free in WebRTC 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

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

Type Values Removed Values Added
Title Memory Corruption in Chrome WebRTC 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 WebRTC 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: Critical)
Weaknesses CWE-119
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-11-03T21:20:20.311Z

Reserved: 2026-10-19T23:16:43.832Z

Link: CVE-2026-113303

cve-icon Vulnrichment

Updated: 2026-10-20T23:33:29.231Z

cve-icon NVD

Status : Modified

Published: 2026-10-20T22:19:24.490

Modified: 2026-11-03T22:19:08.720

Link: CVE-2026-113303

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T15:00:19Z

Weaknesses