Input validation error in Google Chrome - CVE-2026-12009

Vulnerability identifier: #VU134411

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-2026-12009

CWE-ID: CWE-20

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 insufficient validation of user-supplied input in Accessibility. A remote attacker can trick the victim into visiting a specially crafted website and execute arbitrary code on the system.

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

Install updates from vendor's website.

Google Chrome - update to 149.0.7827.114
Microsoft Edge - update to 149.0.4022.69
chromium - addressed in versions 149.0.7827.114-1.el9, 149.0.7827.114-1.el10_2, 149.0.7827.114-1.el10_3, 149.0.7827.114-1.fc43, 149.0.7827.114-1.fc44
chromium (Debian package) - addressed in versions 149.0.7827.114-1~deb12u1, 149.0.7827.114-1~deb13u1

• https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01962725236.html
• https://issues.chromium.org/issues/517332006

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