Improperly implemented security check for standard in Google Chromium - CVE-2026-3063

Vulnerability identifier: #VU123144

CSH Severity: Medium

CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-3063

CWE-ID: CWE-358

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to incorrect implementation in DevTools in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and compromise the system.

Google Chromium
Microsoft Edge
Google Chrome
Prisma Access Browser
Debian Linux
Gentoo Linux
Fedora
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 144.0.7559.116
Microsoft Edge - update to 145.0.3800.82
Google Chrome - update to 145.0.7632.116
www-client/vivaldi - update to 7.8.3925.76
www-client/opera - update to 130.0.5846.0
cef - addressed in versions 145.0.28^chromium145.0.7632.159-1.fc42, 145.0.28^chromium145.0.7632.159-1.fc43, 145.0.28^chromium145.0.7632.159-1.fc44
www-client/microsoft-edge - update to 145.0.3800.97
chromium - addressed in versions 145.0.7632.116-1.el9, 145.0.7632.116-1.el10_1, 145.0.7632.116-1.el10_2, 145.0.7632.116-1.el10_3, 145.0.7632.116-1.fc42, 145.0.7632.116-1.fc43, 145.0.7632.116-1.fc44
chromium (Debian package) - addressed in versions 145.0.7632.116-1~deb12u1, 145.0.7632.116-1~deb13u1
www-client/chromium - update to 145.0.7632.159
www-client/google-chrome - update to 145.0.7632.159
Prisma Access Browser - update to 146.3.8.76

• https://chromereleases.googleblog.com/2026/02/stable-channel-update-for-desktop_23.html
• https://crbug.com/485287859

• Multiple vulnerabilities in Google Chrome
• Debian update for chromium
• Multiple vulnerabilities in Microsoft Edge
• Fedora 43 update for chromium
• Fedora EPEL 10.1 update for chromium
• Fedora EPEL 10.2 update for chromium
• Fedora 44 update for chromium
• Fedora EPEL 9 update for chromium
• Fedora 42 update for chromium
• Fedora EPEL 10.3 update for chromium
• Fedora 44 update for cef
• Fedora 43 update for cef
• Fedora 42 update for cef
• Multiple vulnerabilities in Prisma Access Browser
• Gentoo update for Chromium, Google Chrome, Microsoft Edge, Opera, Vivaldi