Use-after-free in Google Chromium - CVE-2026-9126

Vulnerability identifier: #VU132025

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-2026-9126

CWE-ID: CWE-416

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within DOM in Google Chrome. A remote attacker can trick the victim into visiting a specially crafted web page, trigger a use-after-free error and gain access to sensitive information.

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

Install update from vendor's website.

Google Chromium - update to 148.0.7778.178
Microsoft Edge - update to 148.0.3967.83
Google Chrome - update to 148.0.7778.178
Chrome OS - update to 144.0.7559.259
chromium - addressed in versions 148.0.7778.178-1.el9, 148.0.7778.178-1.el10_2, 148.0.7778.178-1.el10_3, 148.0.7778.178-1.fc42, 148.0.7778.178-1.fc43, 148.0.7778.178-1.fc44
chromium (Debian package) - addressed in versions 148.0.7778.178-1~deb12u1, 148.0.7778.178-1~deb13u1

• https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html
• https://crbug.com/496280532

• Multiple vulnerabilities in Google Chrome
• Fedora 44 update for chromium
• Fedora EPEL 9 update for chromium
• Fedora EPEL 10.2 update for chromium
• Fedora EPEL 10.3 update for chromium
• Fedora 42 update for chromium
• Fedora 43 update for chromium
• Debian update for chromium
• Multiple vulnerabilities in Microsoft Edge
• Multiple vulnerabilities in Google ChromeOS LTS