Input validation error in Google Chromium - CVE-2026-0903

Vulnerability identifier: #VU121338

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-0903

CWE-ID: CWE-20

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 insufficient validation of user-supplied input in Downloads 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
Fedora
cef
chromium (Debian package)

Install update from vendor's website.

Google Chromium - update to 144.0.7559.59
Microsoft Edge - update to 144.0.3719.82
Google Chrome - update to 144.0.7559.59
cef - addressed in versions 144.0.11^chromium144.0.7559.96-1.fc42, 144.0.11^chromium144.0.7559.96-1.fc43
chromium (Debian package) - addressed in versions 144.0.7559.59-1~deb12u1, 144.0.7559.59-1~deb13u1
Prisma Access Browser - update to 144.27.7.133

• https://chromereleases.googleblog.com/2026/01/stable-channel-update-for-desktop_13.html
• https://crbug.com/444803530

• Multiple vulnerabilities in Google Chrome
• Debian update for chromium
• Multiple vulnerabilities in Microsoft Edge
• Fedora 43 update for cef
• Fedora 42 update for cef
• Multiple vulnerabilities in Prisma Access Browser