Improper access control in Google Chromium - CVE-2026-79088

Vulnerability identifier: #VU145477

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-2026-79088

CWE-ID: CWE-284

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to improper access control in FileSystem when handling crafted browser interactions. A remote attacker can trigger the vulnerable functionality to bypass authorization checks.

User interaction is required.

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

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 - 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/496401361

• Multiple vulnerabilities in Google Chrome
• Multiple vulnerabilities in Microsoft Edge
• 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