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… (CVE-2026-17920)
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)
AI Analysis
Technical Summary
CVE-2026-17920 is a use-after-free vulnerability in the V8 engine of Google Chrome before version 151.0.7922.72. Exploitation requires social engineering to persuade a user to install a crafted malicious Chrome extension. Successful exploitation results in arbitrary code execution inside the sandboxed environment of the browser. The vulnerability is classified under CWE-416 (Use After Free). No CVSS score is provided, and no known exploits in the wild have been reported.
Potential Impact
An attacker can execute arbitrary code inside the sandbox of Google Chrome by leveraging this vulnerability, but only after convincing a user to install a malicious extension. The impact is limited by the sandbox containment and the prerequisite user interaction. The Chromium project rates this vulnerability as Low severity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should avoid installing untrusted or suspicious Chrome extensions until an official fix is released. Monitor official Google Chrome security advisories for updates and apply updates promptly once available.
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… (CVE-2026-17920)
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)
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-17920 is a use-after-free vulnerability in the V8 engine of Google Chrome before version 151.0.7922.72. Exploitation requires social engineering to persuade a user to install a crafted malicious Chrome extension. Successful exploitation results in arbitrary code execution inside the sandboxed environment of the browser. The vulnerability is classified under CWE-416 (Use After Free). No CVSS score is provided, and no known exploits in the wild have been reported.
Potential Impact
An attacker can execute arbitrary code inside the sandbox of Google Chrome by leveraging this vulnerability, but only after convincing a user to install a malicious extension. The impact is limited by the sandbox containment and the prerequisite user interaction. The Chromium project rates this vulnerability as Low severity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should avoid installing untrusted or suspicious Chrome extensions until an official fix is released. Monitor official Google Chrome security advisories for updates and apply updates promptly once available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-q3m4-5gjc-6gmv
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-17920"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6ae5149c2644c7f8980cae
Added to database: 07/30/2026, 05:45:56 UTC
Last enriched: 07/30/2026, 06:04:32 UTC
Last updated: 07/31/2026, 02:51:53 UTC
Views: 4
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