CVE-2026-13976 is a heap buffer overflow vulnerability in Google Chrome's Storage component affecting versions before 150.0.7871.47. The issue arises from insufficient data validation, enabling a remote attacker with control over the renderer process to potentially perform a sandbox escape through crafted HTML content. This could lead to an elevation of privileges outside the sandbox environment. No CVSS score is provided, and no explicit patch or remediation level is stated in the input data. The vendor advisory URL is available but does not explicitly confirm patch status within the provided data.

An attacker who has already compromised the renderer process can exploit this vulnerability to escape the sandbox, potentially gaining higher privileges or executing code outside the intended restricted environment. This increases the risk of further system compromise beyond the renderer process.

Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html for current remediation guidance. Until an official fix is confirmed, users should apply any available updates promptly once released and avoid untrusted web content that could exploit the renderer process.