Improperly implemented security check for standard in Google Chromium - CVE-2026-2318

Vulnerability identifier: #VU122766

CSH Severity: High

CVSS v4: 7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-2318

CWE-ID: CWE-358

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to incorrect implementation in PictureInPicture in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and gain access to sensitive information.

Google Chromium
Microsoft Edge
Google Chrome
Prisma Access Browser
Debian Linux
Gentoo Linux
Fedora
Chrome OS
www-client/vivaldi
www-client/opera
cef
www-client/microsoft-edge
chromium
chromium (Debian package)
www-client/chromium
www-client/google-chrome

Install update from vendor's website.

Google Chromium - update to 145.0.7632.45
Microsoft Edge - update to 145.0.3800.58
Google Chrome - update to 145.0.7632.45
www-client/vivaldi - update to 7.8.3925.76
www-client/opera - update to 130.0.5846.0
cef - addressed in versions 145.0.25^chromium145.0.7632.75-4.fc42, 145.0.25^chromium145.0.7632.75-4.fc43, 145.0.25^chromium145.0.7632.75-4.fc44
www-client/microsoft-edge - update to 145.0.3800.97
chromium - addressed in versions 145.0.7632.75-1.el9, 145.0.7632.75-1.el10_1, 145.0.7632.75-1.el10_2, 145.0.7632.75-1.fc42, 145.0.7632.75-1.fc43
chromium (Debian package) - addressed in versions 145.0.7632.75-1~deb12u1, 145.0.7632.75-1~deb13u1
Chrome OS - update to 145.0.7632.154
www-client/chromium - update to 145.0.7632.159
www-client/google-chrome - update to 145.0.7632.159
Prisma Access Browser - update to 145.7.9.76

• https://chromereleases.googleblog.com/2026/02/stable-channel-update-for-desktop_10.html
• https://crbug.com/363930141

• Multiple vulnerabilities in Google Chrome
• Debian update for chromium
• Multiple vulnerabilities in Microsoft Edge
• Fedora EPEL 10.2 update for chromium
• Fedora EPEL 10.1 update for chromium
• Fedora EPEL 9 update for chromium
• Fedora 42 update for chromium
• Fedora 43 update for chromium
• Fedora 43 update for cef
• Fedora 42 update for cef
• Fedora 44 update for cef
• Multiple vulnerabilities in Google ChromeOS
• Multiple vulnerabilities in Prisma Access Browser
• Gentoo update for Chromium, Google Chrome, Microsoft Edge, Opera, Vivaldi