Permissions, Privileges, and Access Controls in Google Chromium - CVE-2026-9116

Vulnerability identifier: #VU132020

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-2026-9116

CWE-ID: CWE-264

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient policy enforcement in ServiceWorker in Google Chrome. A remote attacker can trick the victim to visit a specially crafted website, bypass implemented security measures and compromise the affected system.

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

Install update from vendor's website.

Google Chromium - update to 148.0.7778.178
Microsoft Edge - update to 148.0.3967.83
Google Chrome - update to 148.0.7778.178
chromium - addressed in versions 148.0.7778.178-1.el9, 148.0.7778.178-1.el10_2, 148.0.7778.178-1.el10_3, 148.0.7778.178-1.fc42, 148.0.7778.178-1.fc43, 148.0.7778.178-1.fc44
chromium (Debian package) - addressed in versions 148.0.7778.178-1~deb12u1, 148.0.7778.178-1~deb13u1

• https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html
• https://crbug.com/497436273

• Multiple vulnerabilities in Google Chrome
• Fedora 44 update for chromium
• Fedora EPEL 9 update for chromium
• Fedora EPEL 10.2 update for chromium
• Fedora EPEL 10.3 update for chromium
• Fedora 42 update for chromium
• Fedora 43 update for chromium
• Debian update for chromium
• Multiple vulnerabilities in Microsoft Edge