Improper Authorization in Google Chromium - CVE-2026-79191

Vulnerability identifier: #VU145590

CSH Severity: Medium

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-79191

CWE-ID: CWE-285

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to bypass authorization restrictions.

The vulnerability exists due to improper access control in SiteIsolation when rendering content. A remote attacker can trigger the browser to process crafted web content to bypass authorization restrictions.

User interaction is required to visit crafted web content.

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

Install security update from vendor's website.

Google Chromium - update to 152.0.7977.64
Microsoft Edge - update to 152.0.4191.53
Google Chrome - addressed in versions 151.0.7922.175, 152.0.7977.64
chromium (Debian package) - update to 152.0.7977.75-1~deb13u1
chromium - addressed in versions 154.0.8037.57-1.el9, 154.0.8037.57-1.el10_3, 154.0.8037.57-1.el10_4, 154.0.8037.57-1.fc43, 154.0.8037.57-1.fc44, 154.0.8037.57-1.fc45

• https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html
• https://crbug.com/517606780

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