CVE-2026-13281 is an integer overflow vulnerability in the Mojo IPC system within Google Chrome versions before 149.0.7827.201. Exploitation requires prior compromise of the renderer process and could enable an attacker to perform a sandbox escape, thereby increasing their privileges and potentially compromising the host system. The vulnerability has a high severity rating and a CVSS 3.1 base score of 8.3, reflecting network attack vector with high impact on confidentiality, integrity, and availability. The vendor has published an advisory linked to a stable channel update addressing this issue.

Successful exploitation of this vulnerability could allow an attacker who has compromised the renderer process to escape the sandbox environment, potentially leading to full system compromise or unauthorized access to sensitive data. The impact includes complete confidentiality, integrity, and availability loss on the affected system.

A fix is available in Google Chrome version 149.0.7827.201. Users and administrators should update to this version or later to remediate the vulnerability. Refer to the official Google Chrome stable channel update advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01245939337.html for detailed update instructions.