Description
Use after free in V8 in Google Chrome prior to 151.0.7922.72 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: Low)
Published: 2026-07-30
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

A use after free vulnerability in V8 allows an attacker who convinces a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. This can lead to arbitrary code execution as indicated by CWE‑416 and CWE‑825.

Affected Systems

Google Chrome versions prior to 151.0.7922.72 are vulnerable. The flaw exists in the V8 JavaScript engine used by the browser.

Risk and Exploitability

The CVSS score of 8.8 indicates high severity, but the EPSS score of < 1% shows a low probability of exploitation at this time. The vulnerability is not listed in the CISA KEV catalog. Likely attack requires an attacker to persuade a user to install a malicious extension, which then exploits the use after free to run code within the browser sandbox.

Generated by OpenCVE AI on August 2, 2026 at 06:14 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update Google Chrome to version 151.0.7922.72 or later.
  • Review and remove any unfamiliar or recently added extensions.
  • Restrict extension installation to trusted sources and enforce extension policy settings.

Generated by OpenCVE AI on August 2, 2026 at 06:14 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4710-1 chromium security update
Debian DSA Debian DSA DSA-6408-1 chromium security update
History

Fri, 31 Jul 2026 00:15:00 +0000

Type Values Removed Values Added
Title chromium-browser: chromium-browser: Use after free in V8
Weaknesses CWE-825
References
Metrics threat_severity

None

 threat_severity

Low

Thu, 30 Jul 2026 19:30:00 +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'}

Thu, 30 Jul 2026 06:15:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome

Thu, 30 Jul 2026 01:00:00 +0000

Type Values Removed Values Added
Description Use after free in V8 in Google Chrome prior to 151.0.7922.72 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: Low)
Weaknesses CWE-416
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-07-31T03:56:06.671Z

Reserved: 2026-07-27T23:37:00.699Z

Link: CVE-2026-17920

cve-icon Vulnrichment

Updated: 2026-07-30T18:21:18.110Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-30T01:16:56.190

Modified: 2026-08-03T17:32:07.843

Link: CVE-2026-17920

cve-icon Redhat

Severity : Low

Publid Date: 2026-07-30T00:25:28Z

Links: CVE-2026-17920 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-02T06:15:12Z

Weaknesses