Description

Inappropriate implementation in V8 in Google Chrome prior to 151.0.7922.109 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.8",
  "pubDate": "2026-08-06T22:16:59.260Z",
  "pubdate": "2026-08-06T22:16:59.260Z",
  "executiveSummary": "An inappropriate implementation vulnerability exists within the V8 component of Google Chrome prior to version 151.0.7922.109.\nThe vulnerability allows a remote attacker to execute arbitrary code inside the V8 security sandbox by leveraging a crafted HTML page.\nThe flaw carries a Chromium security severity rating of High, indicating significant risk to browser integrity and host system security.\nAttacker capabilities include remote code execution within the restricted sandbox boundary via untrusted web content.\nExploitation requirements include user interaction, specifically directing a victim to load a malicious or crafted HTML page using an affected browser instance.\nRisk implications involve potential sandbox escalation, memory corruption, or compromise of the rendering engine process if secondary vulnerabilities are chained.",
  "technicalDetails": "The vulnerability resides in the V8 JavaScript and WebAssembly engine, specifically within the implementation of security mechanisms or state management logic.\nThe affected component is the V8 engine integrated within Google Chrome versions prior to 151.0.7922.109, which fails to correctly validate or handle specific inputs or internal states.\nThe root cause stems from an inappropriate implementation flaw that permits boundary violations or unauthorized operations within the isolated V8 execution sandbox.\nThe attack vector is network-based, requiring the target to process a specially crafted HTML page containing malicious JavaScript or byte sequences designed to trigger the flaw.\nAuthentication and privilege requirements are minimal from the perspective of the remote attacker; no prior access or credentials are required, and the attack executes within the context of untrusted web content loaded by the browser.\nStep-by-step exploitation occurs as follows: First, the remote attacker hosts or delivers a crafted HTML page to the victim. Second, the victim renders the page using a vulnerable version of Google Chrome. Third, the browser parses the malicious content, triggering the inappropriate implementation condition within the V8 engine. Fourth, the logic flaw allows the attacker to bypass intended sandbox restrictions or manipulate memory structures. Finally, the attacker achieves arbitrary code execution inside the V8 sandbox environment.\nPayload behavior is confined to the initial execution context of the sandbox, but successful exploitation allows the execution of native instructions or arbitrary scripts inside the restricted V8 boundary.\nPost-exploitation impact involves the potential destabilization of the renderer process, unauthorized execution of arbitrary code within the sandbox, and a foundation for potential sandbox escape chains targeting the underlying operating system."
}