Improperly implemented security check for standard in Google Chromium - CVE-2026-1504

Vulnerability identifier: #VU122090

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-2026-1504

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 Background Fetch API 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
Fedora
Chrome OS
cef
chromium
chromium (Debian package)

Install update from vendor's website.

Google Chromium - update to 144.0.7559.109
Microsoft Edge - update to 144.0.3719.104
Google Chrome - update to 144.0.7559.109
Chrome OS - update to 138.0.7204.307
cef - addressed in versions 144.0.11^chromium144.0.7559.109-2.fc42, 144.0.11^chromium144.0.7559.109-2.fc43
chromium - addressed in versions 144.0.7559.109-1.el9, 144.0.7559.109-1.el10_1, 144.0.7559.109-1.el10_2, 144.0.7559.109-1.fc42, 144.0.7559.109-1.fc43
chromium (Debian package) - addressed in versions 144.0.7559.109-1~deb12u1, 144.0.7559.109-1~deb13u1
Prisma Access Browser - update to 144.27.7.133

• https://chromereleases.googleblog.com/2026/01/stable-channel-update-for-desktop_27.html
• https://crbug.com/474435504

• Inappropriate implementation in Background Fetch API in Google Chrome
• Inappropriate implementation in Background Fetch API in Microsoft Edge
• Fedora EPEL 10.2 update for chromium
• Fedora 43 update for chromium
• Fedora EPEL 9 update for chromium
• Fedora EPEL 10.1 update for chromium
• Fedora 42 update for chromium
• Debian update for chromium
• Fedora 42 update for cef
• Fedora 43 update for cef
• Multiple vulnerabilities in Prisma Access Browser
• Multiple vulnerabilities in Google ChromeOS LTS