Externally Controlled Reference to a Resource in Another Sphere in Google Chromium - CVE-2026-79256

Vulnerability identifier: #VU145496

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-79256

CWE-ID: CWE-610

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to an externally controlled reference in WebView when rendering web content. A remote attacker can persuade a victim to open crafted content to execute arbitrary code.

User interaction is required.

Google Chromium
Google Chrome
Debian Linux
Fedora
chromium
chromium (Debian package)

Install security update from vendor's website.

Google Chromium - update to 152.0.7977.64
Google Chrome - addressed in versions 151.0.7922.175, 152.0.7977.64
chromium - addressed in versions 152.0.7977.75-1.el9, 152.0.7977.75-1.el10_2, 152.0.7977.75-1.el10_3, 152.0.7977.75-1.el10_4, 152.0.7977.75-1.fc43, 152.0.7977.75-1.fc44, 152.0.7977.75-1.fc45
chromium (Debian package) - update to 152.0.7977.75-1~deb13u1

• https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html
• https://crbug.com/499007248

• Multiple vulnerabilities in Google Chrome
• Debian update for chromium
• Fedora 45 update for chromium
• Fedora EPEL 10.4 update for chromium
• Fedora EPEL 9 update for chromium
• Fedora 43 update for chromium
• Fedora 44 update for chromium
• Fedora EPEL 10.2 update for chromium
• Fedora EPEL 10.3 update for chromium